Z68A-GD55 (G3) - Motherboard MSI - Free user manual and instructions

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MSI Z68A-GD55 (G3) - Motherboard
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Product Type Motherboard
Brand MSI
Model Z68A-GD55 (G3)
CPU Socket LGA1155
Compatible Processors Intel Core i7 / i5 / i3 / Pentium / Celeron
Chipset Intel Z68 (B3)
Form Factor ATX (30.5 cm × 24.5 cm)
Weight (estimated) Approximately 1.2 kg
Required Power Supply ATX 24-pin + ATX 8-pin CPU
Supported Memory 4 x DDR3 DIMM, max 32 GB, DDR3 2133(OC)/1600(OC)/1333/1066, dual channel
SATA Storage 4 x SATA 6 Gb/s (Intel Z68) + 4 x SATA 3 Gb/s (Intel Z68), RAID 0/1/5/10 supported
USB 3.0 2 rear ports + 1 internal connector (NEC D720200)
USB 2.0 4 rear ports + 3 internal connectors
Audio Realtek ALC892, 8-channel HD Audio
LAN Realtek RTL8111E, Gigabit Ethernet (10/100/1000)
Expansion Slots 2 x PCIe x16, 3 x PCIe x1, 2 x PCI
Integrated Graphics VGA, DVI-D, HDMI outputs (usable with integrated graphics processor)
Multi-GPU ATI CrossFireX, NVIDIA SLI, Lucid Virtu
Overclocking Features OC Genie button, advanced settings in BIOS
Rear Panel 1 PS/2, 1 CMOS clear, 1 SPDIF coaxial, 1 SPDIF optical, 4 USB 2.0, 1 HDMI, 1 VGA, 1 DVI-D, 1 RJ45, 2 USB 3.0, 6 audio jacks
Maintenance and Cleaning Regular dusting with compressed air. Do not use liquids. Disconnect before cleaning.
Safety Follow ESD precautions (antistatic wrist strap). Always turn off and disconnect before handling.
Spare Parts and Repairability No user-repairable parts. Contact an authorized service center for repair.

Frequently Asked Questions - Z68A-GD55 (G3) MSI

Which processors are compatible with the MSI Z68A-GD55 (G3) motherboard?
The motherboard supports Intel Core i7, Core i5, Core i3, Pentium and Celeron processors in LGA1155 socket. Visit the MSI website for the complete list of supported CPUs.
How to install RAM memory?
Insert DDR3 modules into the DIMM slots respecting the notch orientation. For dual-channel mode, use identical modules and place them in same-color slots (e.g., DIMM1 and DIMM3). Maximum capacity is 32 GB.
How to clear CMOS?
You can use the CMOS clear button on the rear panel or the JBAT1 jumper on the board. Turn off power, press the button or set the jumper to clear position for a few seconds, then return to normal.
How to enable automatic overclocking with OC Genie?
Press the OC Genie button when the system is off. The button lights up and locks. On the next boot, the motherboard will automatically optimize performance. To disable, turn off the PC and press the button again.
What to do if the system does not boot after a BIOS change?
Clear CMOS using the button or jumper. You can also remove the coin cell battery for 30 seconds to reset default settings.
How to connect additional fans?
Use SYSFAN1~4 connectors on the motherboard. Connect the red wire (+12V) and black wire (GND). CPUFAN and SYSFAN1 connectors support intelligent fan speed control (Smart Fan).
Can I use a SATA 3 Gb/s drive on a SATA 6 Gb/s port?
Yes, SATA 6 Gb/s ports are backward compatible. The drive will operate at its maximum speed (3 Gb/s).
How to update the BIOS?
Download the latest BIOS version from the MSI website. Use the M-Flash utility built into the BIOS to flash via a USB drive. Follow on-screen instructions.
Does the motherboard support RAID?
Yes, SATA1~6 ports (Intel Z68) support RAID 0, 1, 5, and 10 modes via Intel Rapid Storage technology. Configure RAID in BIOS before installing the operating system.
How to connect the front panel?
Connect case cables to JFP1 (switches and LEDs) and JFP2 (speaker) connectors. Respect polarity (positive and negative) as indicated in the manual.

User questions about Z68A-GD55 (G3) MSI

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Download the instructions for your Motherboard in PDF format for free! Find your manual Z68A-GD55 (G3) - MSI and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. Z68A-GD55 (G3) by MSI.

USER MANUAL Z68A-GD55 (G3) MSI

The material in this document is the intellectual property of MICRO-STAR INTERNATIONAL. We take every care in the preparation of this document, but no guarantee is given as to the correctness of its contents. Our products are under continual improvement and we reserve the right to make changes without notice.

Trademarks

All trademarks in this manual are properties of their respective owners.

MSI® is a registered trademark of Micro-Star Int'l Co., Ltd. NVIDIA® is a registered trademark of NVIDIA Corporation. ATI® is a registered trademark of AMD Corporation. AMD® is a registered trademark of AMD Corporation. Intel® is a registered trademark of Intel Corporation. Windows® is a registered trademark of Microsoft Corporation. AMI is a registered trademark of American Megatrends Inc. Award® is a registered trademark of Phoenix Technologies Ltd. Sound Blaster® is a registered trademark of Creative Technology Ltd. Realtek® is a registered trademark of Realtek Semiconductor Corporation. JMicron® is a registered trademark of JMicron Technology Corporation. Netware® is a registered trademark of Novell, Inc. Lucid® is a trademark of LucidLogix Technologies, Ltd. VIA® is a registered trademark of VIA Technologies, Inc. ASMedia® is a registered trademark of ASMedia Technology Inc. iPad, iPhone, and iPod are trademarks of Apple Inc.

Revision History

RevisionRevision HistoryDate
V4.0First release for Europe2011/05

Technical Support

If a problem arises with your system and no solution can be obtained from the user's manual, please contact your place of purchase or local distributor. Alternatively, please try the following help resources for further guidance.

Visit the MSI website for technical guide, BIOS updates, driver updates, and other information: http://www.msi.com/service/download. Contact our technical staff at: http://support.msi.com

Safety Instructions

Always read the safety instructions carefully. Keep this User's Manual for future reference. Keep this equipment away from humidity. Lay this equipment on a reliable flat surface before setting it up. The openings on the enclosure are for air convection hence protect the equipment from overheating. DO NOT COVER THE OPENINGS. Make sure the voltage of the power source is at 110/220V before connecting the equipment to the power inlet. Place the power cord such a way that people cannot step on it. Do not place anything over the power cord. Always unplug the power cord before inserting any add-on card or module. All cautions and warnings on the equipment should be noted. Never pour any liquid into the opening that can cause damage or cause electrical shock. If any of the following situations arises, get the equipment checked by service personnel:

The power cord or plug is damaged. Liquid has penetrated into the equipment. The equipment has been exposed to moisture. The equipment does not work well or you cannot get it to work according to the User's Manual. The equipment has been dropped and damaged. The equipment has obvious signs of breakage.

DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT ABOVE 60°C (140°F), IT MAY DAMAGE THE EQUIPMENT.

CAUTION: There is a risk of explosion if the battery is incorrectly replaced.

Replace only with the same or equivalent type recommended by the manufacturer.

Warning to users:

For better environmental protection, waste batteries should be collected separately for recycling and special disposal.

FCC-B Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

MSI Z68A-GD55 (G3) - FCC-B Radio Frequency Interference Statement - 1

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help.

Notice 1

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Notice 2

Shielded interface cables and A.C. power cord, if any, must be used in order to comply with the emission limits.

SEE THE INSTALLATION NOTICE BEFORE CONNECTING TO THE NETWORK.

MSI Z68A-GD55 (G3) - Notice 2 - 1

Micro-Star International

MS-7681

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation.

WEEE (Waste Electrical and Electronic Equipment) Statement

ENGLISH

To protect the global environment and as an environmentalist, MSI must remind you that...

Under the European Union ("EU") Directive on Waste Electrical and Electronic Equipment, Directive 2002/96/EC, which takes effect on August 13, 2005, products of "electrical and electronic equipment" cannot be discarded as municipal wastes anymore, and manufacturers of covered electronic equipment

will be obligated to take back such products at the end of their useful life. MSI will comply with the product take back requirements at the end of life of MSI-branded products that are sold into the EU. You can return these products to local collection points.

MSI Z68A-GD55 (G3) - ENGLISH - 1

DEUTSCH

Safety Instructions..

FCC-B Radio Frequency Interference Statement. iv

WEEE (Waste Electrical and Electronic Equipment) Statement .

English.

Mainboard Specifications. En-2

Quick Components Guide. En-4

Screw Holes. En-5

CPU (Central Processing Unit). En-6

Memory. En-9

Power Supply. En-11

Back Panel. En-12

Connectors. En-14

Buttons. En-20

Voltage Check Point. En-21

LED Status Indicators. En-22

Jumper. En-23

Slots. En-24

BIOS Setup. En-25

Software Information. En-35

Deutsch De-1

Mainboard Specifications

Processor Support

■ Intel® Core™ i7/ Core™ i5 /Core™ i3/ Pentium®/ Celeron® processor in the LGA1155 package (For the latest information about CPU, please visit http://www.msi.com/service/cpu-support)

Chipset

Intel® Z68 (B3) chipset

Memory Support

4 DDR3 DIMMs support DDR3 2133(OC)/ 1600(OC)/ 1333/ 1066 DRAM (32GB Max) Supports Dual-Channel mode (For more information on compatible components, please visit http://www.msi.com/service/test-report)

LAN

Supports Gb LAN (10/100/1000) by Realtek® RTL8111E

Audio

Chip integrated by Realtek® ALC892 Flexible 8-channel audio with jack sensing Compliant with Azalia 1.0 Spec

SATA

4 SATA 6Gb/s ports

  • (SATA1~2) by Intel® Z68
  • (SATA7~8) by Marvell® 9128 (Z68A-GD65)

4 SATA 3Gb/s ports (SATA3~6) by Intel® Z68

RAID

SATA1~6 support Intel® Rapid Storage Technology (AHCI/RAID 0/1/5/10) by Intel® Z68, support SSD caching for system acceleration. SATA7~8 support RAID 0/1 mode by Marvell® SE9128.

USB 3.0

2 USB 3.0 ports and 1 USB 3.0 onboard connector by NEC D720200.

BIOS

Supports Dual BIOS (Z68A-GD65). Supports Single BIOS (Z68A-GD55).

Multi-GPU

Supports ATI CrossFireX™ Technology. Supports NVIDIA® SLI™ Technology. Supports Lucid® VIRTU Technology.

Connectors

Back panel

  • 1 PS/2 keyboard/mouse port
  • 1 Clear CMOS button
  • 1 Coaxial S/PDIF-Out port
  • 1 Optical S/PDIF-Out port
  • 4 USB 2.0 ports
  • 1 HDMI port**
  • 1 VGA port**
  • 1 DVI-D port**
  • 1 LAN port
  • 2 USB 3.0 ports
  • 6 flexible audio ports

**(The VGA, DVI-D & HDMI ports only work with Integrated Graphics Processor)

On-Board

  • 3 USB 2.0 connectors
  • 1 USB 3.0 connector
  • 1 Chassis Intrusion connector
  • 1 S/PDIF-Out connector
  • 1 Front Panel Audio connector
  • 1 TPM Module connector
  • 1 Serial connector
  • 1 set voltage check point
  • 1 DLED3 connector (optional)
  • 1 OC Genie button
  • 1 Power button
  • 1 Reset button

Slots

2 PCIE x16 slots, 3 PCIE x1 slots, 2 PCI slots, support 3.3V/5V PCI bus interface

Form Factor

ATX (30.5 cm x 24.5 cm)

Mounting

9 mounting holes

If you need to purchase accessories and request the part numbers, you can search the product web page and find details on our web address below

http://www.msi.com/index.php

Quick Components Guide

MSI Z68A-GD55 (G3) - Quick Components Guide - 1

Screw Holes

When you install the mainboard, you have to place the mainboard into the chassis in the correct direction. The locations of screw holes on the mainboard are shown below.

MSI Z68A-GD55 (G3) - Screw Holes - 1

MSI Z68A-GD55 (G3) - Screw Holes - 2

Refer to the picture above to install standoffs in the appropriate locations on the chassis, and then screw through the mainboard screw holes into the standoffs.

Important

  • To prevent damage to the mainboard, any contact between the mainboard circuit and the chassis or unnecessary standoffs mounted on the chassis is prohibited.
  • Please make sure there are no metal components placed on the mainboard or within the chassis that may cause a short circuit of the mainboard.

CPU (Central Processing Unit)

When you are installing the CPU, make sure to install the cooler to prevent overheating. If you do not have the CPU cooler, consult your dealer before turning on the computer.

For the latest information about CPU, please visit

http://www.msi.com/service/cpu-support

Important

Overheating

Overheating will seriously damage the CPU and system. Always make sure the cooling fan can work properly to protect the CPU from overheating. Make sure that you apply an even layer of thermal paste (or thermal tape) between the CPU and the heatsink to enhance heat dissipation.

Replacing the CPU

While replacing the CPU, always turn off the ATX power supply or unplug the power supply's power cord from the grounded outlet first to ensure the safety of the CPU.

Overclocking

This mainboard is designed to support overclocking. However, please make sure your components are able to tolerate such abnormal settings while doing overclocking. Any attempt to operate beyond product specifications is not recommended. We do not guarantee the damages or risks caused by inadequate operation or beyond product specifications.

Introduction to LGA 1155 CPU

The surface of LGA 1155 CPU. Remember to apply some thermal paste on it for better heat dispersion.

Yellow triangle is the Pin 1 indicatorMSI Z68A-GD55 (G3) - Introduction to LGA 1155 CPU - 1

CPU & Cooler Installation

When you are installing the CPU, make sure the CPU has a cooler attached on the top to prevent overheating. Meanwhile, do not forget to apply some thermal paste on CPU before installing the heat sink/cooler fan for better heat dispersion.

Follow the steps below to install the CPU & cooler correctly. Wrong installation will cause the damage of your CPU & mainboard.

  1. Open the load lever.

MSI Z68A-GD55 (G3) - CPU & Cooler Installation - 1

  1. After confirming the CPU direction for correct mating, put down the CPU in the socket housing frame. Be sure to grasp on the edge of the CPU base. Note that the alignment keys are matched.

MSI Z68A-GD55 (G3) - CPU & Cooler Installation - 2

  1. Lift the load lever up to fully open position.

MSI Z68A-GD55 (G3) - CPU & Cooler Installation - 3

  1. Remove the plastic cap. Engage the load lever while pressing down lightly onto the load plate.

MSI Z68A-GD55 (G3) - CPU & Cooler Installation - 4

Important

Visually inspect if the CPU is seated well into the socket. If not, take out the CPU with pure vertical motion and reinstall.

  1. Secure the lever near the hook end under the retention tab.

MSI Z68A-GD55 (G3) - Important - 1

  1. Press the four hooks down to fasten the cooler. Turn over the mainboard to confirm that the clip-ends are correctly inserted.

MSI Z68A-GD55 (G3) - Important - 2

  1. Make sure the four hooks are in proper position before you install the cooler. Align the holes on the mainboard with the cooler. Push down the cooler until its four clips get wedged into the holes of the mainboard.

MSI Z68A-GD55 (G3) - Important - 3

  1. Finally, attach the CPU Fan cable to the CPU fan connector on the mainboard.

MSI Z68A-GD55 (G3) - Important - 4

Important

  • Confirm if your CPU cooler is firmly installed before turning on your system.
  • Do not touch the CPU socket pins to avoid damaging.
  • Whenever CPU is not installed, always protect your CPU socket pin with the plastic cap covered to avoid damaging.
  • Please refer to the documentation in the CPU cooler package for more details about the CPU cooler installation.
  • Read the CPU status in BIOS.

Memory

These DIMM slots are used for installing memory modules. For more information on compatible components, please visit http://www.msi.com/service/test-report

DDR3

240-pin, 1.5V

MSI Z68A-GD55 (G3) - DDR3 - 1

Dual-Channel mode Population Rule

In Dual-Channel mode, the memory modules can transmit and receive data with two data bus lines simultaneously. Enabling Dual-Channel mode can enhance the system performance. The following illustrations explain the population rules for Dual-Channel mode.

MSI Z68A-GD55 (G3) - Dual-Channel mode Population Rule - 1

(2)MSI Z68A-GD55 (G3) - Dual-Channel mode Population Rule - 2

MSI Z68A-GD55 (G3) - Dual-Channel mode Population Rule - 3

Important

  • DDR3 memory modules are not interchangeable with DDR2, and the DDR3 standard is not backwards compatible. You should always install DDR3 memory modules in the DDR3 DIMM slots.
  • In Dual-Channel mode, make sure that you install memory modules of the same type and density in different channel DIMM slots.
  • To ensure a successful system boot-up, always insert the memory modules into the DIMM1 first.
  • Due to the chipset resource deployment, the system density will only be detected up to 31+GB (not full 32GB) when each DIMM is installed with a 8GB memory module.

Installing Memory Modules

  1. The memory module has only one notch on the center and will only fit in the right orientation.
  2. Insert the memory module vertically into the DIMM slot. Then push it in until the golden finger on the memory module is deeply inserted in the DIMM slot. The plastic clip at each side of the DIMM slot will automatically close when the memory module is properly seated.
  3. Manually check if the memory module has been locked in place by the DIMM slot clips at the sides.

MSI Z68A-GD55 (G3) - Installing Memory Modules - 1

MSI Z68A-GD55 (G3) - Installing Memory Modules - 2

MSI Z68A-GD55 (G3) - Installing Memory Modules - 3

Important

You can barely see the golden finger if the memory module is properly inserted in the DIMM slot.

Power Supply

ATX 24-pin Power Connector: JPWR1

This connector allows you to connect an ATX 24-pin power supply. To connect the ATX 24-pin power supply, make sure the plug of the power supply is inserted in the proper orientation and the pins are aligned. Then push down the power supply firmly into the connector.

You may use the 20-pin ATX power supply as you like. If you'd like to use the 20-pin ATX power supply, please plug your power supply along with pin 1 & pin 13.

MSI Z68A-GD55 (G3) - ATX 24-pin Power Connector: JPWR1 - 1

ATX 8-pin Power Connector: JPWR2

This connector is used to provide the power output to the CPU.

MSI Z68A-GD55 (G3) - ATX 8-pin Power Connector: JPWR2 - 1

Important

Make sure that all the connectors are connected to proper ATX power supplies to ensure stable operation of the mainboard.

Back Panel

Keyboard/ Mouse

MSI Z68A-GD55 (G3) - Back Panel - 1

Coaxial S/PDIF-Out

MSI Z68A-GD55 (G3) - Back Panel - 2

USB 2.0 Port

MSI Z68A-GD55 (G3) - Back Panel - 3

LAN

MSI Z68A-GD55 (G3) - Back Panel - 4

VGA Port

MSI Z68A-GD55 (G3) - Back Panel - 5

MSI Z68A-GD55 (G3) - Back Panel - 6

USB 2.0 Port

Optical S/PDF Port

HDMI Port

USB 3.0 Port

DVI-D Port

Mouse/Keyboard

The standard PS/2® mouse/keyboard DIN connector is for a PS/2® mouse/keyboard.

USB 2.0 Port

The USB (Universal Serial Bus) port is for attaching USB devices such as keyboard, mouse, or other USB-compatible devices.

USB 3.0 Port

USB 3.0 port is backward-compatible with USB 2.0 devices. Supports data transfer rate up to 5 Gbit/s (SuperSpeed).

Important

If you want to use a USB 3.0 device, you must use the USB 3.0 cable to connect to the USB 3.0 port.

Clear CMOS Button

There is a CMOS RAM on board that has a power supply from external battery to keep the system configuration data. With the CMOS RAM, the system can automatically boot OS every time it is turned on. If you want to clear the system configuration, use the button to clear data. Press the button to clear the data.

Important

  • Make sure that you power off the system before clearing CMOS data.
  • After pressing this button to clear CMOS data in power off (G3) state, the system will boot automatically.

Coaxial S/PDIF-Out

This SPDIF (Sony & Philips Digital Interconnect Format) connector is provided for digital audio transmission to external speakers through a coaxial cable.

Optical S/PDIF-Out

This S/PDIF (Sony & Philips Digital Interconnect Format) connector is provided for digital audio transmission to external speakers through an optical fiber cable.

HDMI Port

The High-Definition Multimedia Interface (HDMI) is an all-digital audio/video interface capable of transmitting uncompressed streams. HDMI supports all TV formats, including standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable.

VGA Port

The DB15-pin female connector is provided for monitor.

DVI-D Port

The DVI-D (Digital Visual Interface-Digital) connector allows you to connect an LCD monitor. It provides a high-speed digital interconnection between the computer and its display device. To connect an LCD monitor, simply plug your monitor cable into the DVI-D connector, and make sure that the other end of the cable is properly connected to your monitor (refer to your monitor manual for more information).

Important

The HDMI, VGA and DVI-D ports on the mainboard are designed to serve as IGP (Integrated Graphics Processor) used. If you installed a processor without integrated graphics chip, these display ports will have no effect.

LAN

The standard RJ-45 LAN jack is for connection to the Local Area Network (LAN). You can connect a network cable to it.

LEDColorLED StateCondition
LeftYellowOffLAN link is not established.
On(Steady state)LAN link is established.
On(brighter & pulsing)The computer is communicating with another computer on the LAN.
RightGreenOff10 Mbits/sec data rate is selected.
On100 Mbits/sec data rate is selected.
OrangeOn1000 Mbits/sec data rate is selected.

Audio Ports

These audio connectors are used for audio devices. It is easy to differentiate between audio effects according to the color of audio jacks.

Line-In: Blue - Line In, is used for external CD player, tape-player or other audio devices. Line-Out: Green - Line Out, is a connector for speakers or headphones. - Mic: Pink - Mic, is a connector for microphones. RS-Out: Black - Rear-Surround Out in 4/5.1/7.1 channel mode. CS-Out: Orange - Center/ Subwoofer Out in 5.1/7.1 channel mode. SS-Out: Gray - Side-Surround Out in 7.1 channel mode.

Connectors

Serial ATA Connector: SATA1~8

This connector is a high-speed Serial ATA interface port. Each connector can connect to one Serial ATA device.

* The MB layout in this figure is for reference only.MSI Z68A-GD55 (G3) - Serial ATA Connector: SATA1~8 - 1

MSI Z68A-GD55 (G3) - Serial ATA Connector: SATA1~8 - 2

SATA1~2 (6Gb/s)

supported by Intel® Z68

SATA3~6 (3Gb/s)

supported by Intel® Z68

SATA7~8 (6Gb/s)

supported by Marvell® 9128 (optional)

Important

Please do not fold the Serial ATA cable into 90-degree angle. Otherwise, data loss may occur during transmission.

Serial Port Connector: JCOM1

This connector is a 16550A high-speed communication port that sends/receives 16-byte FIFOs. You can attach a serial device.

MSI Z68A-GD55 (G3) - Serial Port Connector: JCOM1 - 1

Fan Power Connectors: CPUFAN, SYSFAN1~4

The fan power connectors support system cooling fans with +12V. When connecting the wires to the connectors, always note that the red wire is positive and should be connected to +12V; the black wire is ground and should be connected to GND. If the mainboard has a System Hardware Monitor chipset on-board, you must use a specially designed fan with a speed sensor to take advantage of the CPU fan control.

MSI Z68A-GD55 (G3) - Fan Power Connectors: CPUFAN, SYSFAN1~4 - 1

MSI Z68A-GD55 (G3) - Fan Power Connectors: CPUFAN, SYSFAN1~4 - 2

Important

  • Please refer to the recommended CPU fans at the processor's official website or consult the vendors for proper CPU cooling fan.
  • CPUFAN and SYSFAN1 support Smart fan control. You can install the Control Center utility that will automatically control the fan speeds according to the actual temperatures. Fan cooler sets with 3 or 4 pin power connectors are both available for CPUFAN and SYSFAN1.

Front USB Connector: JUSB1 / JUSB2 / JUSB3

This connector, compliant with Intel® I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 players, printers, modems, and the like.

The JUSB1 (red mark) supports the MSI newly Super-Charger technology which provides fast charging function anytime for charging your Smartphone.

If your system is in S0 / S1 state, you must install MSI's application, SuperCharger, to control the JUSB1. When the application is set to "On", it can fast charge Smartphone via JUSB1 but the data transmission and synchronization will be disabled. When the application is set to "Off", the JUSB1 will work as a normal USB connector. In S3 / S4 / S5 state, JUSB1 can still provide fast charging function without operating system, no matter you un-plug and re-plug the Smartphone.

MSI Z68A-GD55 (G3) - Front USB Connector: JUSB1 / JUSB2 / JUSB3 - 1

Important

  • Note that the pins of VCC and GND must be connected correctly to avoid possible damage.
  • For iPad, JUSB1 (red mark) can still charge iPad in S3, S4, S5 state.
  • Please note that connecting one device at a time for stable charging is recommended.
  • Super-Charger technology would be available on specific models, please refer to MSI website for model support list.
  • We recommend that don't disconnect the device when you charge it in S1 state.

Front USB Connector: JUSB4

USB 3.0 port is backward-compatible with USB 2.0 devices. Supports data transfer rate up to 5 Gbit/s (SuperSpeed).

MSI Z68A-GD55 (G3) - Front USB Connector: JUSB4 - 1

Important

  • Note that the pins of VCC and GND must be connected correctly to avoid possible damage.
  • If you want to use a USB 3.0 device, you must use the USB 3.0 cable to connect to the USB 3.0 port.

Front Panel Audio Connector: JAUD1

This connector allows you to connect the front panel audio and is compliant with Intel® Front Panel I/O Connectivity Design Guide.

MSI Z68A-GD55 (G3) - Front Panel Audio Connector: JAUD1 - 1

TPM Module connector: JTPM1

This connector connects to a TPM (Trusted Platform Module) module (optional). Please refer to the TPM security platform manual for more details and usages.

* The MB layout in this figure is for reference only.MSI Z68A-GD55 (G3) - TPM Module connector: JTPM1 - 1

S/PDIF-Out Connector: JSP1

This connector is used to connect S/PDIF (Sony & Philips Digital Interconnect Format) interface for digital audio transmission.

* The MB layout in this figure is for reference only.MSI Z68A-GD55 (G3) - S/PDIF-Out Connector: JSP1 - 1

S/PDIF-Out Bracket (optional)

Chassis Intrusion Connector: JCI1

This connector connects to the chassis intrusion switch cable. If the chassis is opened, the chassis intrusion mechanism will be activated. The system will record this status and show a warning message on the screen. To clear the warning, you must enter the BIOS utility and clear the record.

MSI Z68A-GD55 (G3) - Chassis Intrusion Connector: JCI1 - 1

Front Panel Connectors: JFP1, JFP2

These connectors are for electrical connection to the front panel switches and LEDs. The JFP1 is compliant with Intel® Front Panel I/O Connectivity Design Guide.

MSI Z68A-GD55 (G3) - Front Panel Connectors: JFP1, JFP2 - 1

MSI Z68A-GD55 (G3) - Front Panel Connectors: JFP1, JFP2 - 2

DLED3 Connector: JDLED3 (optional)

This is reserved for connecting the MSI future control card.

MSI Z68A-GD55 (G3) - DLED3 Connector: JDLED3 (optional) - 1

Buttons

The mainboard provides the following buttons for you to set the computer's function. This section will explain how to change your mainboard's function through the use of button.

OC Genie Button: TURBO1

This button is used to auto-overclock for the system. Press this button to enable the OC Genie function when the system is in power off state, meanwhile, the button will light and lock. And then the system will automatically detect the optimum values to overclock after booting the system. To disable the OC Genie function, please press the button again after power off the system, meanwhile, the button light will off and unlock, and the system will restore the default for next boot.

MSI Z68A-GD55 (G3) - OC Genie Button: TURBO1 - 1

Important

  • Please install the DDR3 1333 and up memory and equip better heat sink/ cooler with OC Genie function.
  • We do not guarantee the OC Genie overclocking range and the damages or risks caused by the OC Genie overclocking behavior.
  • You can disable the OC Genie function in BIOS setup. And we suggest you to save the OC Genie configuration to overclocking profile in BIOS for future using.

Power Button: POWER1

This button is used to turn on or turn off the system. Press the button to turn on or turn off the system.

MSI Z68A-GD55 (G3) - Power Button: POWER1 - 1

Reset Button: RESET1

This button is used to reset the system. Press the button to reset the system.

MSI Z68A-GD55 (G3) - Reset Button: RESET1 - 1

Voltage Check Point

Voltage Check Point: FV1

This voltage check point set is used to measure the current CPU/CPU_VTT/CPU_GFX/DDR/PCH voltage.

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 1

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 2

CPU voltage: measure the current CPU voltage with CPU point and GND point by using a multimeter.

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 3

CPU_VTT voltage: measure the current CPU VTT voltage with CPU_VTT point and GND point by using a multimeter.

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 4

CPU_GFX voltage: measure the current CPU Integrated Graphic voltage with CPU_GFX point and GND point by using a multimeter.

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 5

DDR voltage: measure the current DDR voltage with DDR point and GND point by using a multimeter.

MSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 6

PCH voltage: measure the current PCH voltage with PCH point and GND point by using a multimeter.

LED Status IndicatorsMSI Z68A-GD55 (G3) - Voltage Check Point: FV1 - 7

CPU Phase LEDs

These LEDs indicate the current CPU power phase mode. Follow the instructions below to read.

MSI Z68A-GD55 (G3) - CPU Phase LEDs - 1

Lights

MSI Z68A-GD55 (G3) - CPU Phase LEDs - 2

Off

CPU is in 1 phase power mode.
CPU is in 2 phase power mode.
CPU is in 3 phase power mode.
CPU is in 4 phase power mode.
CPU is in 5 phase power mode.
CPU is in 6 phase power mode.

Dual BIOS LED

The Dual BIOS LED indicates the BIOS status during system power on. Follow the instructions below to read.

Off: Normal.

Blink (1 cycle/second): The primary BIOS failed.

Solid: Both primary and secondary BIOS failed.

Jumper

Clear CMOS Jumper: JBAT1

There is a CMOS RAM onboard that has a power supply from an external battery to keep the data of system configuration. With the CMOS RAM, the system can automatically boot OS every time it is turned on. If you want to clear the system configuration, set the jumper to clear data.

JBAT1

MSI Z68A-GD55 (G3) - Clear CMOS Jumper: JBAT1 - 1

Keep Data

MSI Z68A-GD55 (G3) - Clear CMOS Jumper: JBAT1 - 2

Clear Data

Important

You can clear CMOS by shorting 1-2 pin while the system is off, then open it. Avoid clearing the CMOS while the system is on; it will damage the mainboard.

Slots

PCIE (Peripheral Component Interconnect Express) Slot

The PCIE slot supports the PCIE interface expansion card.

MSI Z68A-GD55 (G3) - PCIE (Peripheral Component Interconnect Express) Slot - 1

PCI (Peripheral Component Interconnect) Slot

The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that comply with PCI specifications.

MSI Z68A-GD55 (G3) - PCI (Peripheral Component Interconnect) Slot - 1

Important

When adding or removing expansion cards, make sure that you unplug the power supply first. Meanwhile, read the documentation for the expansion card to configure any necessary hardware or software settings for the expansion card, such as jumpers, switches or BIOS configuration.

PCI Interrupt Request Routing

The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines over which devices can send interrupt signals to the microprocessor. The PCI IRQ pins are typically connected to the PCI bus pins as follows:

Order1Order2Order3Order4
PCI Slot1INT A#INT B#INT C#INT D#
PCI Slot2INT B#INT C#INT D#INT A#

BIOS Setup

This chapter provides basic information on the BIOS Setup program and allows you to configure the system for optimum use. You may need to run the Setup program when:

  • An error message appears on the screen during the system booting up, and requests you to run BIOS SETUP. You want to change the default settings for customized features.

Important

  • The items under each BIOS category described in this chapter are under continuous update for better system performance. Therefore, the description may be slightly different from the latest BIOS and should be held for reference only.
  • Upon boot-up, the 1st line appearing after the memory count is the BIOS version. It is usually in the format:

E7681IMS.xxx 052011 where:

1st digit refers to BIOS type as E = EFI

2nd - 5th digit refers to the model number.

6th digit refers to the chipset as I = Intel, N = n Vidia, A = AMD and V = VIA .

7th - 8th digit refers to the customer as MS = all standard customers.

xxx refers to the BIOS version.

052011 refers to the date this BIOS was released.

Entering Setup

Power on the computer and the system will start POST (Power On Self Test) process. When the message below appears on the screen, press key to enter Setup.

Press DEL to enter Setup Menu, F11 to enter Boot Menu

If the message disappears before you respond and you still wish to enter Setup, restart the system by turning it OFF and On or pressing the RESET button. You may also restart the system by simultaneously pressing <Ctrl> , <Alt> , and <Delete> keys.

Control

KeyboardMouseDescription
<↑ ↓>Move the cursorSelect Item
<Enter>Click/ Double-click the left buttonSelect Icon/ Field
<Esc>Click the right buttonJumps to the Exit menu or returns to the previous from a submenu
<++>Decrease the numeric value or make changes
<->
<F1>General Help
<F4>CPU Specifications
<F5>Enter Memory-Z
<F6>Load optimized defaults
<F10>Save Change and Reset
<Esc>Exit

If you find a right pointer symbol (as shown in the right view) appears to the left of certain fields that means a sub-menu can be launched from this field. A sub-menu contains additional options for a field parameter. You can use arrow keys ( ) or mouse to highlight the field and

PCI Subsystem Settings

ACPI Settings

Integrated Peripherals

On-Chip VGA Devices

Press or double-click the left mouse button to enter the sub-menu. Then you can use the control keys to enter values and move from field to field within a sub-menu. If you want to return to the previous menu, just press the or click the right mouse button.

The BIOS setup program provides a General Help screen. You can call up this screen from any menu by simply pressing . The Help screen lists the appropriate keys to use and the possible selections for the highlighted item. Press to exit the Help screen.

The Main Menu

Once you enter BIOS CMOS Setup Utility, the Main Menu will appear on the screen. The Main Menu allows you to select from the setup functions.

MSI Z68A-GD55 (G3) - The Main Menu - 1

Language

After entering the Setup menu, you can see a "Language" button. Please click it and select the language, at your desire, for the BIOS setting first.

Green Power

Click "Green Power" icon to enter the menu. Use this menu to specify the power phase.

Utilities

Click "Utilities" icon to enter the menu. This menu provides the useful utility for you to live update bios and hard disk backup.

Overclocking

Click "Overclocking" icon to enter the menu. Use this menu to specify your settings for frequency/voltage control and overclocking.

Games

Click the "Games" icon to enter the menu. This menu provides several games for you to play.

Settings

Click the "Settings" icon to enter the menu. Use this menu to specify your settings for chipset features, boot device, and password.

When entering the BIOS Setup utility, follow the processes below for general use.

  1. Load Optimized Defaults: Select [Settings] -> [Save & Exit] -> [Restore Defaults] and click on it. Then the screen shows a pop-up message as below. Select [Yes] and click on it to load the default settings for optimal system performance.

MSI Z68A-GD55 (G3) - Settings - 1

  1. Setup Date/Time: Select [Settings] -> [System Status] -> [System Date]/[System Time] and click on it. Then you can key in the Date and Time in their respective fields.

MSI Z68A-GD55 (G3) - Settings - 2

  1. Save & Exit Setup: Select [Settings] -> [Save & Exit] -> [Save Changes and Reboot] and click on it. Then the screen shows a pop-up message as below. Select [Yes] and click on it to save the configurations and exit the BIOS setup utility.

MSI Z68A-GD55 (G3) - Settings - 3

  1. OC Menu Introduction: This menu is for advanced users who want to overclock the mainboard.

MSI Z68A-GD55 (G3) - Settings - 4

Current CPU / DRAM Frequency

These items show the current clocks of CPU and memory speed. Read-only.

▸ CPU Base Frequency [10KHz]

This item allows you to set the CPU base clock (in 10KHz). You may overclock the CPU by adjusting this value. Please note that overclocking behavior is not guaranteed.

Adjust CPU Ratio

This item controls the multiplier that is used to determine the internal clock speed of the processor relative to the external or motherboard clock speed. It is available only when the processor supports this function.

Adjusted CPU Frequency

It shows the adjusted CPU frequency. Read-only.

Adjust CPU Ratio in OS

Enable this item, it will allow you to change the CPU ratio in OS by using MSI application.

Internal PLL Overvoltage

This item is used to adjust the PLL voltage.

EIST

The Enhanced Intel SpeedStep technology allows you to set the performance level of the microprocessor whether the computer is running on battery or AC power. This field will appear after you installed the CPU which supports speedstep technology.

DRAM Frequency

This setting controls the frequency of memory.

Extreme Memory Profile (X.M.P)

This item is used to enable/disable the Intel Extreme Memory Profile (XMP). For further information please refer to Intel's official website.

Adjusted DRAM Frequency

It shows the adjusted DRAM frequency. Read-only.

DRAM Timing Mode

Select whether DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. Setting to [Auto] enables DRAM timings and the following "Advanced DRAM Configuration" sub-menu to be determined by BIOS based on the configurations on the SPD. Selecting [Link] or [Unlink] allows users to configure the DRAM timings and the following related "Advanced DRAM Configuration" sub-menu manually.

Advanced DRAM Configuration

Press to enter the sub-menu.

Command Rate2

This setting controls the DRAM command rate.

tCL

This controls the CAS latency, which determines the timing delay (in clock cycles) before SDRAM starts a read command after receiving it.

tRCD

When DRAM is refreshed, both rows and columns are addressed separately. This setup item allows you to determine the timing of the transition from RAS (row address strobe) to CAS (column address strobe). The less the clock cycles, the faster the DRAM performance.

tRP

This setting controls the number of cycles for Row Address Strobe (RAS) to be allowed to precharge. If insufficient time is allowed for the RAS to accumulate its charge before DRAM refresh, refreshing may be incomplete and DRAM may fail to retain data. This item applies only when synchronous DRAM is installed in the system.

tRAS

This setting determines the time RAS takes to read from and write to memory cell.

tRFC

This setting determines the time RFC takes to read from and write to a memory cell.

tWR

Minimum time interval between end of write data burst and the start of a precharge

command. Allows sense amplifiers to restore data to cells.

-tWTR

Minimum time interval between the end of write data burst and the start of a column-read command. It allows I/O gating to overdrive sense amplifiers before read command starts.

tRRD

Specifies the active-to-active delay of different banks.

tRTP

Time interval between a read and a precharge command.

tFAW

This item is used to set the tFAW (four activate window delay) timing.

tWCL

This item is used to set the tWCL (Write CAS Latency) timing.

tCKE

This item is used to set the tCKE timing.

Advanced Channel 1/2 Timing Configuration

Press to enter the sub-menu. And you can set the advanced memory timing for each channel.

  • tRRDR/tRRDD/tWWDR/tWWDD/tRWRDD/tWRDRDD/tRWSR

These items are used to set the memory timings for memory channel 1/2.

>GT OverClocking

This item allows you to enable/disable the overclocking of integrated graphics.

GT Ratio

This setting controls the ratio of integrated graphics frequency to enable the integrated graphics to run at different frequency combinations.

> Spread Spectrum

When the mainboard's clock generator pulses, the extreme values (spikes) of the pulses create EMI (Electromagnetic Interference). The Spread Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves.

Important

  • If you do not have any EMI problem, leave the setting at [Disabled] for optimal system stability and performance. But if you are plagued by EMI, select the value of Spread Spectrum for EMI reduction.
  • The greater the Spread Spectrum value is, the greater the EMI is reduced, and the system will become less stable. For the most suitable Spread Spectrum value, please consult your local EMI regulation.
  • Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clock speed which may just cause your overclocked processor to lock up.

> VDroop Control

This item is used to select the VDroop control mode.

CPU Core Voltage/ CPU I/O Voltage/ DRAM Voltage/ GPU Voltage/ System Agent Voltage(SA)/CPU PLL Voltage/DDR_VREF_CA_A/DDR_VREF_CA_B/DDR_VREF_DA_A/DDR_VREF_DA_B/PCH 1.05

These items are used to adjust the voltage of CPU, Memory and chipset.

  • Current CPU Core Voltage/ Current CPU I/O Voltage/ Current DRAM Voltage/ Current GPU Voltage

These items show current CPU Core/ CPU I/O/ DRAM/ GPU voltage. Read-only.

Overclocking Profiles

Press to enter the sub-menu.

Overclocking Profile 1/2/3/4/5/6

Press to enter the sub-menu. In the sub-menu, these items are used to save the current settings, and you can load the settings from the stored profile.

OC Retry Count

When overclocking has failed, setting this item as [1, 3] will allow system to reboot 1/3 times with the same overclocked configuration. If overclocking has failed every time, the system will restore the defaults.

CPU Specifications

Press to enter the sub-menu. The submenu shows the information of installed CPU.

CPU Technology Support

Press to enter the sub-menu. The sub-menu shows the installed CPU technologies. Read only.

▸ MEMORY-Z

Press to enter the sub-menu.

DIMM1~4 Memory SPD

Press to enter the sub-menu. The sub-menu displays the information of installed memory.

X.M.P Support Information

Press to enter the sub-menu. These items display the current status of the X.M.P support information. Read only.

CPU Features

Press to enter the sub-menu:

Hyper-threading

The processor uses Hyper-Threading technology to increase transaction rates and reduce end-user response times. The technology treats the two cores inside the processor as two logical processors that can execute instructions simultaneously. In this way, the system performance is highly improved. If you disable the function, the processor will use only one core to execute the instructions. Please disable this item if your operating system doesn't support HT Function, or unreliability and instability may occur.

Important

Enabling the functionality of Hyper-Threading Technology for your computer system requires ALL of the following platform components:

CPU: An Intel® Processor with HT Technology; - Chipset: An Intel® Chipset that supports HT Technology; - BIOS: A BIOS that supports HT Technology and has it enabled; - OS: An operating system that supports HT Technology.

For more information on Hyper-threading Technology, go to:

http://www.intel.com/technology/platform-technology/hyper-threading/

Active Processor Cores

This item allows you to select the number of active processor cores. ▸ Limit CPUID Maximum

It is designed to limit the listed speed of the processor to older operating systems. Execute Disable Bit

Intel's Execute Disable Bit functionality can prevent certain classes of malicious "buffer overflow" attacks when combined with a supporting operating system. This functionality allows the processor to classify areas in memory by where application code can execute and where it cannot. When a malicious worm attempts to insert code in the buffer, the processor disables code execution, preventing damage or worm propagation. Intel Virtualization Tech

This item is used to enable/disable the Intel Virtualization technology. For further information please refer to Intel's official website.

Intel VT-D Tech This item is used to enable/disable the Intel VT-D technology. For further information please refer to Intel's official website. Power Technology

This item allows you to select the Intel Dynamic Power technology mode.

C1E Support

To enable this item to read the CPU power consumption while idle. Not all processors support Enhanced Halt state (C1E). OverSpeed Protection

Overspeed Protection function can monitor the current CPU draws as well as its power consumption. If it exceeds a certain level, the processor automatically reduces its clock speed. If you want to overclock your CPU, set it to [Disabled].

Intel C-State

C-state is a power management state that significantly reduces the power of the processor during idle. This field will appear after you installed the CPU which supports c-state technology. ▸ Package C-State limit

This field allows you to select a C-state mode.

▸ Long duration power limit(W) This field allows you to adjust the TDP limit for the long duration. ▸ Long duration maintained(ms) This field allows you to adjust the maintaining time for long duration power limit.

Short duration power limit(W) This field allows you to adjust the TDP limit for the short duration. Primary plane turbo power limit(W)

This field allows you to adjust the TDP limit for the primary plane turbo.

Software Information

Take out the Driver/Utility DVD that is included in the mainboard package, and place it into the DVD-ROM drive. The installation will auto-run, simply click the driver or utility and follow the pop-up screen to complete the installation. The Driver/Utility DVD contains the:

  • Driver menu: It provides available drivers. Install the driver by your desire and to activate the device.
  • Utility menu: It allows you to install the available software applications.
  • Service base menu: Through this menu to link the MSI officially website.
  • Product info menu: It shows the newly information of MSI product.
  • Security menu: It provides the useful antivirus program.

Important

Please visit the MSI officially website to get the latest drivers and BIOS for better system performance.

MSI Z68A-GD55 (G3) - Important - 1

Processors

4 SATA 6Gb/s connectors

Front panel connectors: JFP1, JFP2

PCI Subsystem Settings, ACPI Settings, Integrated Peripherals, On-Chip VGA Devices

Current CPU / DRAM Frequency

CPU Base Frequency [10KHz]

Adjusted CPU Frequency

Adjust CPU Ratio in OS

Adjusted DRAM Frequency

Advanced Channel 1/2 Timing Configuration

CPU Technology Support

http://www.intel.com/technology/platform-technology/hyper-threading/

Intel Virtualization Tech

OverSpeed Protection

Package C-State limit

Long duration maintained (ms)

Primary/Secondary plane turbo power limit (W)

http://www.msi.com/service/cpu-support

Important

Overheating

PCIe (Peripheral Component Interconnect Express) slot

PCI (Peripheral Component Interconnect) slot

Current CPU / DRAM Frequency

CPU Base Frequency [10KHz]

Adjusted CPU Frequency

Adjust CPU Ratio in OS

Adjusted DRAM Frequency

Advanced Channel 1/2 Timing Configuration

CPU Technology Support

http://www.intel.com/technology/platform-technology/hyper-threading/

Intel Virtualization Tech

OverSpeed Protection

Long duration maintained(ms)

Placement of system board components

MSI Z68A-GD55 (G3) - Placement of system board components - 1

Screw holes

When installing the system board, it must be inserted into the chassis in the correct orientation. The placement of the screw holes is shown.

The side edges should be against the rear of the chassis, the placement for the I/O shield.

MSI Z68A-GD55 (G3) - Screw holes - 1

MSI Z68A-GD55 (G3) - Screw holes - 2

→ Screw holes

Follow the instructions above to place the holders in the correct position in the chassis, then screw the screws through the screw holes into the holders.

Warning

To avoid damage to the system board, any contact between the system board wires and the chassis is prohibited, and the holders must be installed in the chassis. - Make sure that there are no metal components on the system board or in the chassis that could cause a short circuit on the system board.

CPU (Central Processing Unit)

When installing the CPU, to prevent the processor from overheating, do not forget to install the processor cooler. If you do not have a processor cooler, please contact your dealer to purchase and install it before turning on the computer.

Latest information on CPU support can be obtained at http://www.msi.com/service/cpu-support

WARNING

Improper installation may seriously damage the central processor. To protect the processor from overheating, make sure the processor cooler is working properly. Violation of heat dissipation may require a heat-conducting paste (or thermal pad) between the processor and the radiator.

CPU Replacement

When replacing the CPU, to avoid damaging it, be sure to disconnect the power source or unplug the power supply unit from the outlet.

Overclocking

This system board supports overclocking. Make sure that the system components are capable of operating in such non-standard modes during overclocking. It is not recommended to use the product in modes that do not comply with the specifications. We do not guarantee protection against damage and risks caused by improper operation and setting parameters with exceeded characteristics.

LGA 1155 Processor Installation

Processor exterior. To increase heat dissipation, make sure a layer of thermal paste has been applied.

MSI Z68A-GD55 (G3) - LGA 1155 Processor Installation - 1

Processor and Fan Installation

To avoid overheating during operation, be sure to install the processor fan. At the same time, to improve heat dissipation, make sure a layer of thermal paste has been applied to the processor before installing the fan.

Follow these instructions for correct installation. Incorrect installation will lead to damage to the processor and the system board.

  1. Hold the retention bracket.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 1

  1. After confirming the correct orientation of the processor, place the processor into the socket. Note that the notches on the processor must match the protrusions on the processor socket.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 2

2. Press down the lever to close the load plate for processor installation.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 3

  1. Remove the protective cover. Release the metal cover of the retention mechanism.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 4

Check the correct installation of the processor in the socket. If the processor is installed incorrectly, remove the processor and reinstall it.

  1. Lower the lever onto the socket cover and secure it.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 5

  1. Press the four latches to secure the fan. Check the fan's rotation and make sure the latches firmly hold the fan.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 6

  1. Before installing the fan, make sure all four latches are properly aligned. Align the holes in the fan with the latches on the retention mechanism. Press the fan down toward the processor and ensure that the four latches fit into the holes in the fan.

MSI Z68A-GD55 (G3) - Processor and Fan Installation - 7

Installing the memory module

  1. Memory modules have a notch in the center. The module will only fit into the socket when oriented correctly.
  2. Insert the module into the DIMM slot in a vertical direction. Then press down on it so that the gold contacts are deeply seated in the DIMM slot. If the memory module is installed correctly, the plastic latches on both sides will close automatically.
  3. Make sure the module is secured by the DIMM slot latches on both sides.

MSI Z68A-GD55 (G3) - Installing the memory module - 1

MSI Z68A-GD55 (G3) - Installing the memory module - 2

MSI Z68A-GD55 (G3) - Installing the memory module - 3

Caution

The gold contacts may be damaged if the memory module is not placed correctly in the DIMM slot.

Power connector

24-pin ATX power connector: JPWR1

This connector allows you to connect a 24-pin ATX power connector. Before connecting it, make sure the connector and the pins of the socket are properly aligned. Then firmly insert it into the socket on the system board.

You can also use a 20-pin ATX power supply. When using a 20-pin connector, plug it in along pins 1 and 13.

MSI Z68A-GD55 (G3) - 24-pin ATX power connector: JPWR1 - 1

8-pin ATX power connector: JPWR2

This power connector is used to provide power to the processor.

MSI Z68A-GD55 (G3) - 8-pin ATX power connector: JPWR2 - 1

Caution

Make sure that all power connectors are connected to the ATX power sources for stable operation of the system board.

Back panel

MSI Z68A-GD55 (G3) - Back panel - 1

* System board components are shown for reference only.MSI Z68A-GD55 (G3) - Back panel - 2

MSI Z68A-GD55 (G3) - Back panel - 3

SATA1~2 (6Gb/s)

Operate on the Intel® Z68 chipset

SATA3~6 (3Gb/s)

Operate on the Intel® Z68 chipset

SATA7~8 (6Gb/s)

Operate on the Marvell 9128 chipset

(Optional)

Caution

Please avoid sharp bends in the Serial ATA cable. Otherwise, data loss may occur during transmission.

Serial port header: JCOM1

This header is a high-speed serial port connector 16550A with 16-byte FIFO. A serial device can be connected directly to this header.

MSI Z68A-GD55 (G3) - Serial port header: JCOM1 - 1

Fan power headers: CPUFAN, SYSFAN1~4

The fan power headers support fans with +12V power. When connecting, remember that the red wire connects to +12V, and the black wire to ground GND. If a hardware monitoring chip is installed on the system board, special fans with speed sensors must be used for fan control functions.

SYSFAN1MSI Z68A-GD55 (G3) - Fan power headers: CPUFAN, SYSFAN1~4 - 1

MSI Z68A-GD55 (G3) - Fan power headers: CPUFAN, SYSFAN1~4 - 2

NOTE

  • To find out about compatible fan models, please visit the official website or consult with your dealer.
  • CPUFAN and SYSFAN1 support fan speed control. For automatic fan speed control based on CPU and system temperature, you can install the Control Center.
  • The CPUFAN and SYSFAN1 headers support fans with both 3-pin and 4-pin connectors.

Front panel headers: JFP1, JFP2

These headers are used to connect the buttons and indicators located on the front panel of the chassis. The JFP1 header complies with the Intel® Front Panel I/O Connectivity Design Guide.

MSI Z68A-GD55 (G3) - Front panel headers: JFP1, JFP2 - 1

MSI Z68A-GD55 (G3) - Front panel headers: JFP1, JFP2 - 2

LED header: JDLED3 (optional)

This header is reserved for connecting an MSI control card in the future.

MSI Z68A-GD55 (G3) - LED header: JDLED3 (optional) - 1

Buttons

This system board has additional buttons. This chapter will explain the functions of each button.

OC Genie button: TURBO1

This button is used for automatic system overclocking. Press this button to enable the OC Genie function when the system is off. After pressing the button, the LED will light up. The system will automatically determine the optimal overclocking values after system startup. To disable the OC Genie function, press this button again after the system is on. The button will return to its original position and the LED will turn off. The system will restore the default parameters at the next startup.

MSI Z68A-GD55 (G3) - OC Genie button: TURBO1 - 1

Warning

  • Install DDR3 1333 RAM and above, and install a better fan/cooler for better performance with the OC Genie function.
  • We cannot guarantee the overclocking performance of OC Genie and do not guarantee the absence of possible damages caused by using OC Genie. There is a possibility to disable the OC Genie function in the BIOS setting. It is recommended to save the OC Genie configuration in BIOS for future use.

Power button: POWER1

This button is used to turn the system on or off. Press this button to turn the system on or off.

MSI Z68A-GD55 (G3) - Power button: POWER1 - 1

Reset button: RESET1

This button is used to reset the system. Press this button to reset the system.

MSI Z68A-GD55 (G3) - Reset button: RESET1 - 1

Voltage Check Point

Voltage Check Point: FV1

LED Indicators

MSI Z68A-GD55 (G3) - LED Indicators - 1

CPU Phase LEDs

These LEDs indicate the working mode of the CPU power supply. Information about the status of the LEDs is given in the table.

MSI Z68A-GD55 (G3) - CPU Phase LEDs - 1

ON

MSI Z68A-GD55 (G3) - ON - 1

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Dual BIOS indicator

The Dual BIOS indicator shows the BIOS status during system startup. The normal indicator statuses are listed in the table.

Off: Normal.

Blinking (1 blink/sec.): Main BIOS loading failed.

Continuously lit: Failed attempt to load either BIOS.

PCIE slot (Peripheral Component Interconnect Express)

The PCIE slot supports PCIE expansion cards.

MSI Z68A-GD55 (G3) - PCIE slot (Peripheral Component Interconnect Express) - 1

PCIEx16 slot

PCI slot (Peripheral Component Interconnect)

The PCI slot allows you to install LAN, SCSI, USB, and other expansion cards that comply with the PCI specification.

MSI Z68A-GD55 (G3) - PCI slot (Peripheral Component Interconnect) - 1

32-bit PCI slot

Warning

Before installing or removing expansion cards, make sure that the power cables are disconnected from the electrical outlet. Read the documentation for the expansion card and perform the necessary hardware or software installations for this motherboard, such as jumpers, switches, or BIOS configuration.

Mapping of PCI interrupt requests

IRQ - abbreviation for interrupt request (line) - a hardware line through which devices can send an interrupt signal to the microprocessor.

The usual connection of PCI IRQ to the PCI bus contacts is shown below:

Приказ1Приказ2Приказ3Приказ4
PCI сnot1INT A#INT B#INT C#INT D#
PCI сnot2INT B#INT C#INT D#INT A#

BIOS Setup

This chapter provides basic information about the BIOS setup mode (BIOS SETUP), which allows you to set the optimal system configuration. This mode may be required in the following cases:

During system boot, a message about an error appears with a request to run BIOS SETUP. If necessary, replace the factory settings with your own.

ATTENTION

PCI Subsystem Settings ACPI Settings Integrated Peripherals On-Chip VGA Devices

Press the left mouse button to call up the menu. Then you can use the control keys to enter parameters and move through the submenu items. To return to the main menu, simply press the right mouse button.

Detailed help

In BIOS setup mode, there is an option to get detailed help. It can be called up in any menu by simply pressing <F1>. The help window will list all possible settings in the selected menu item. Press <Esc> to close the help window.

The Main Menu

When entering BIOS setup mode, the main menu is displayed on the screen. The main menu allows you to select the following setup functions.

MSI Z68A-GD55 (G3) - The Main Menu - 1

Language

A menu item where you can change the current BIOS language.

Green Power

A menu item where you can change settings for energy saving.

Utilities

A menu item that contains preset programs for automatic BIOS overclocking and creating a RAID HDD.

Overclocking

Current CPU / DRAM Frequency

These items show the current CPU frequency and memory speed. For reference only.

CPU Base Frequency [10KHz]

This item allows you to set the base clock frequency of the CPU (in 10KHz). Changing this parameter provides the possibility of overclocking the CPU. Note that the possibility of successful overclocking is not guaranteed.

Adjust CPU Ratio

This item controls the multiplier, designed to determine the internal clock frequency of the processor in accordance with the external clock frequency or the system bus frequency. It is available only when the processor supports this function.

Adjusted CPU Frequency

This item shows the current CPU frequency. For reference only.

Adjust CPU Ratio in OS

Enable this item, it allows you to change the CPU frequency in the OS using MSI applications.

Internal PLL Overvoltage

This item allows you to set the internal PLL overvoltage.

EIST

Enhanced Intel SpeedStep technology allows you to set the performance level of the microprocessor. This item appears after installing a processor that supports SpeedStep technology.

DRAM Frequency

This item allows you to set the memory frequency.

Extreme Memory Profile (X.M.P)

This item allows you to enable/disable Intel Extreme Memory Profile (XMP). For more information, please refer to the Intel official website.

Adjusted DRAM Frequency

This item displays the current DRAM frequency. For reference only.

DRAM Timing Mode

This item determines whether the DRAM timing is controlled by the SPD (Serial Presence Detect) EEPROM on the DRAM module. When [Auto] is selected, the DRAM timing, including the menu items listed below, is set according to the data from the SPD. Setting [Link] or [Unlink] allows you to manually adjust the DRAM timing available in this menu.

Advanced DRAM Configuration

Press [Enter] to enter the submenu.

Command Rate2

This item controls the DRAM command rate.

tCL

This item controls the CAS latency delay, which determines the period (in clock cycles) between the SDRAM receiving a read command and the beginning of its execution.

tRCD

This item is used to set the tWCL (Write CAS Latency) timings.

tCKE

This item is used to set the tCKE timings.

Advanced Channel 1/2 Timing Configuration

Press to enter the submenu. Here you can modify the memory timings for each channel.

  • tRRDR/tRRDD/tWWDR/tWWDD/tRWRDD/tWRDRDD/tRWSR

These items are used to set the memory timings for channels 1/2.

GT OverClocking

This item allows you to enable/disable the overclocking of the video card.

GT Ratio

This setting controls the ratio of the video card clock frequency, so that it operates at the base core frequencies.

▸ Spread Spectrum

Since the system clock generator generates pulses, its operation causes electromagnetic interference (EMI). The Spread Spectrum function reduces this interference by generating smoother pulses.

Usage

  • If you have no interference problems, leave the value [Disabled] for better stability and performance. However, if you encounter electromagnetic interference, select Spread Spectrum to reduce it. The lower the Spread Spectrum value, the lower the level of electromagnetic interference, but the system will become less stable. To choose the appropriate Spread Spectrum value, refer to the electromagnetic interference limits set by legislation.
  • Do not forget to disable the Spread Spectrum function if you are overclocking the system clock. This is necessary because even a slight jitter in the clock generator signals can cause the overclocked processor to fail. VDroop Control This item is used to select the VDroop control mode.
  • CPU Core Voltage/ CPU I/O Voltage/ DRAM Voltage/ GPU Voltage/ System Agent Voltage(SA)/ CPU PLL Voltage/ DDR_VREF_CA_A/ DDR_VREF_CA_B/ DDR_VREF_DA_A/ DDR_VREF_DA_B/ PCH 1.05 These items allow you to adjust the voltage of the CPU, memory, and chipset.
  • Current CPU Core Voltage/ Current CPU I/O Voltage/ Current DRAM Voltage/ Current GPU Voltage These items show the current voltage of CPU Core/ CPU I/O/ DRAM/ GPU. For reference only. Overclocking Profiles

Press to enter the submenu.

Overclocking Profile 1/2/3/4/5/6 Press to enter the submenu. In the submenu, these items are used to save the current parameters and allow loading the settings from a saved profile. OC Retry Count

If overclocking fails, setting this item to [1, 3] allows the system to attempt to boot 1/3 times with the given configuration. If booting fails three times, the system will restore the default settings.

▸ CPU Specifications

Press to enter the submenu. The submenu shows information about the installed CPU.

≻ CPU Technology Support

Press to enter the submenu. The submenu shows the technologies supported by the installed CPU. For reading only.

MEMORY-Z

Press to enter the menu.

DIMM1~4 Memory SPD

Press to enter the submenu. This item shows information about the installed memory modules.

X.M.P Support Information

Press to enter the submenu. These items show the current state and information about X.M.P support. For reading only.

CPU Features

Press to enter the submenu:

Hyper-threading

http://www.intel.com/technology/platform-technology/hyper-threading/

Active Processor Cores This item allows you to select the number of active processor cores.

Limit CPUID Maximum

This item is intended to limit the length of the processor ID number sent to the operating system. Execute Disable Bit

Using the Intel Execute Disable Bit technology allows you to avoid vulnerabilities caused by malicious programs exploiting buffer overflow type attacks, if this technology is supported by the processor and the operating system. It allows the processor to divide memory zones according to whether executable code is stored in memory or not. When a malicious program tries to place code in a buffer, the processor will deny execution of the code, which will stop the spread of the malicious program.

Intel Virtualization Technology This item enables/disables Intel Virtualization Technology. For more information, refer to the official Intel website. Intel VT-D Technology This item enables/disables Intel VT-D Technology. For more information, refer to the official Intel website. Power Technology This item allows you to select the Intel Dynamic Power technology mode. C1E Support Enable this item to reduce power consumption when the processor is idle. Not all processors support the Enhanced Halt state (C1E). OverSpeed Protection The OverSpeed Protection function monitors the CPU's computing throughput and its power consumption. If it exceeds a predefined level, the processor

automatically lowers its clock frequency. If you plan to overclock the CPU, set this parameter to [Disabled].

Intel C-State

C-state is a power management technology that significantly reduces processor power consumption in idle mode. This item is available only when using a CPU that supports C-state technology.

Package C-State limit

This item allows you to select the C-state limit.

Long duration power limit(W)

This item allows you to adjust the TDP power limit over an extended period.

Long duration maintained(ms)

This item allows you to set the duration for the overloaded mode.

Short duration power limit(W)

This item allows you to adjust the TDP power limit over a short period.

Primary plane turbo power limit(W)

This item allows you to adjust the TDP power limit for the primary/secondary plane turbo.

Provided by software

The Driver/Utility disc (driver and utility) in the accessory kit of the system package. The installation will start automatically. Click on the name of the driver/utility and follow the on-screen instructions to install. The Driver/Utility disc contains:

  • Driver menu: Lists the available drivers. Install the drivers for the devices you need.
  • Utility menu: Allows you to install the available utilities. Service base menu: Allows you to connect to the official MSI website.
  • Product info menu: Shows information about MSI products.
  • Security menu: Lists useful antivirus programs.

Warning

Please visit the MSI website for the latest drivers and BIOS, which will improve system performance.

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Product information

Brand : MSI

Model : Z68A-GD55 (G3)

Category : Motherboard