990XAGD55 - Carte mère MSI - Free user manual and instructions

USER MANUAL 990XAGD55 MSI

G52-76401XO PrefaceMS-7640 Preface

PrefaceMS-7640 Preface

Copyrght Notce The materal n ths document s the ntellectual property of MICRO-STAR INTERNA-TIONAL. We take every care n the preparaton of ths document, but no guarantee s gven as to the correctness of ts contents. Our products are under contnual mprove-ment and we reserve the rght to make changes wthout notce. Trademarks All trademarks are the propertes of ther respectve owners. MSI

® s regstered trademark of Mcro-Star Int’l Co.,Ltd.NVIDIA ® s regstered trademark of NVIDIA Corporaton. ATI

Always read the safety nstructons carefully.

Keep ths User’s Manual for future reference.

Keep ths equpment away from humdty.

Lay ths equpment on a relable 󰘱at surface before settng t up.

The openngs on the enclosure are for ar convecton hence protects the equpment

from overheatng. DO NOT COVER THE OPENINGS.

Make sure the voltage of the power source and adjust properly 110/220V before

connectng the equpment to the power nlet.

Place the power cord such a way that people can not step on t. Do not place any

thng over the power cord.

Always Unplug the Power Cord before nsertng any add-on card or module.

All cautons and warnngs on the equpment should be noted.

Never pour any lqud nto the openng that could damage or cause electrcal

If any of the followng stuatons arses, get the equpment checked by servce

The power cord or plug s damaged.

Lqud has penetrated nto the equpment.

The equpment has been exposed to mosture.

The equpment does not work well or you can not get t work accordng to User’s

The equpment has dropped and damaged.

The equpment has obvous sgn of breakage.

DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT UNCONDITIONED,

CAUTION: Danger of exploson f battery s ncorrectly replaced.

Replace only wth the same or equvalent type recommended by the manufacturer.

For better envronmental protecton, waste batteres should be

collected separately for recyclng specal dsposal.

FCC-B Rado Frequency Interference Statement

Ths equpment has been tested and found

to comply wth the lmts for a Class B dg-

tal devce, pursuant to Part 15 of the FCC Rules. These lmts are desgned to provde

reasonable protecton aganst harmful nter-

ference n a resdental nstallaton. Ths equpment generates, uses and can radate

rado frequency energy and, f not nstalled and used n accordance wth the nstruc-

tons, may cause harmful nterference to rado communcatons. However, there s no

guarantee that nterference wll not occur n a partcular nstallaton. If ths equpment

does cause harmful nterference to rado or televson recepton, whch can be deter-

mned by turnng the equpment o󰘯 and on, the user s encouraged to try to correct the

nterference by one or more of the measures lsted below.

Reorent or relocate the recevng antenna.

Increase the separaton between the equpment and recever.

Connect the equpment nto an outlet on a crcut d󰘯erent from that to whch the

recever s connected.

Consult the dealer or an experenced rado/televson techncan for help.

The changes or mod󰘰catons not expressly approved by the party responsble for com

plance could vod the user’s authorty to operate the equpment.

Shelded nterface cables and A.C. power cord, f any, must be used n order to comply

wth the emsson lmts.

VOIR LA NOTICE D’INSTALLATION AVANT DE RACCORDER AU RESEAU.

ths devce must accept any nterference receved, ncludng nterference that may

WEEE (Waste Electrcal and Electronc Equpment) Statement

ENGLISH To protect the global envronment and as an envronmentalst, MSI must re-

Under the European Unon (“EU”) Drectve on Waste Electrcal and Elec

tronc Equpment, Drectve 2002/96/EC, whch takes e󰘯ect on August 13,

2005, products of “electrcal and electronc equpment” cannot be dscarded

as muncpal waste anymore and manufacturers of covered electronc equp

ment wll be oblgated to take back such products at the end of ther useful lfe. MSI wll

comply wth the product take back requrements at the end of lfe of MSI-branded prod

ucts that are sold nto the EU. You can return these products to local collecton ponts.

WEEE (Waste Electrcal and Electronc Equpment) Statement v

CPU (Central Processng Unt)

(For the latest nformaton about CPU, please vst http://www.ms.com/servce/cpu-

DDR3 2133 *(OC)/ 1866/ 1600/ 1333/ 1066/ 800 SDRAM (total 32 GB Max)

4 DDR3 DIMMs, supports Dual-Channel mode

*(OC means OverClockng, for more nformaton on compatble components, please

vst http://www.ms.com/servce/test-report/)

LAN Supports PCIe Gb LAN (10/100/1000) by Realtek

HD audo codec ntegrated by Realtek

6 SATA 6Gb/s ports (SATA1~6) by AMD

2 USB 3.0 ports (back panel) by NEC D720200

1 PS/2 keyboard/ mouse port

1 Seral port connector

1 Chasss Intruson connector

1 S/PDIF-Out connector

1 Front Panel Audo connector

If two graphcs cards are nstalled n both PCIe x16 slots, these two PCIe 2.0 x16

If you need to purchase accessores and request the part numbers, you could search

the product web page and 󰘰nd detals on our web address below

http://www.ms.com/ndex.php

When you nstall the manboard, you have to place the manboard nto the chasss n the

correct drecton. The locatons of screws holes on the manboard are shown as below.

Refer above pcture to nstall stando󰘯s n the approprate locatons on chasss and then

screw through the manboard screw holes nto the stando󰘯s.

To prevent damage to the manboard, any contact between the manboard crcut and

chasss or unnecessary stando󰘯s mounted on the chasss s prohbted.

Please make sure there s no metal components placed on the manboard or wthn

the chasss that may cause short crcut of the manboard.

The sde has to toward

the rear, the poston

for the I/O sheld of the

CPU (Central Processng Unt)

When you are nstallng the CPU, make sure to nstall the cooler to prevent overheatng.

If you do not have the CPU cooler, consult your dealer before turnng on the computer.

For the latest nformaton about CPU, please vst http://www.ms.com/servce/cpu-sup

Overheatng wll serously damage the CPU and system. Always make sure the coolng

fan can work properly to protect the CPU from overheatng. Make sure that you apply

an even layer of thermal paste (or thermal tape) between the CPU and the heatsnk to

enhance heat dsspaton.

Replacng the CPU Whle replacng the CPU, always turn o󰘯 the ATX power supply or unplug the power

supply’s power cord from the grounded outlet 󰘰rst to ensure the safety of CPU.

Ths manboard s desgned to support overclockng. However, please make sure your

components are able to tolerate such abnormal settng, whle dong overclockng. Any

attempt to operate beyond product spec󰘰catons s not recommended. We do not guar

antee the damages or rsks caused by nadequate operaton or beyond product spec-

Introducton to AM3+ CPU The surface of CPU. Remember to apply some thermal paste on t for better heat

CPU & Cooler Installaton

When you are nstallng the CPU, make sure the CPU has a cooler attached on the top

to prevent overheatng. Meanwhle, do not forget to apply some thermal paste on CPU

before nstallng the heat snk/cooler fan for better heat dsperson.

Follow the steps below to nstall the CPU & cooler correctly. Wrong nstallaton wll

cause the damage of your CPU & manboard

If the CPU s correctly nstalled, the

pns should be completely embedded

nto the socket and can not be seen.

Please note that any volaton of the

correct nstallaton procedures may

cause permanent damages to your

3. Press the CPU down 󰘰rmly nto the

socket and close the lever. As the

CPU s lkely to move whle the lever

s beng closed, always close the

lever wth your 󰘰ngers pressng tghtly

on top of the CPU to make sure the

CPU s properly and completely

embedded nto the socket.

Pull the lever sdeways away from

the socket. Make sure to rase the

lever up to a 90-degree angle.

Look for the gold arrow of the CPU.

The gold arrow should pont as shown

n the pcture. The CPU can only 󰘰t n

the correct orentaton.

Whle dsconnectng the Safety Hook from the 󰘰xed bolt, t s necessary to keep an eye

on your 󰘰ngers, because once the Safety Hook s dsconnected from the 󰘰xed bolt, the

󰘰xed lever wll sprng back nstantly.

Poston the coolng set onto the

retenton mechansm.

Hook one end of the clp to hook

5. Then press down the other end of the

clp to fasten the coolng set on the

top of the retenton mechansm.

Locate the Fx Lever and lft up t.

Fasten down the lever.7. Attach the CPU Fan cable to the CPU

compatble components, please vst

http://www.ms.com/servce/test-report/

DDR3 240-pn, 1.5V48x2=96 pn 72x2=144 pn Dual-Channel mode Populaton Rule

In Dual-Channel mode, the memory modules can transmt and receve data wth two

data bus lnes smultaneously. Enablng Dual-Channel mode can enhance the system

performance. The followng llustratons explan the populaton rules for Dual-Channel

DDR3 memory modules are not nterchangeable wth DDR2 and the DDR3 standard

s not backwards compatble. You should always nstall DDR3 memory modules n

the DDR3 DIMM slots.

In Dual-Channel mode, make sure that you nstall memory modules of the

and densty n d󰘯erent channel DIMM slots.

To enable successful system boot-up, always nsert the memory modules nto the

Due to the chpset resource deployment, the system densty wll only be detected up

The memory module has only one notch on the center and wll only 󰘰t n the rght

Manually check f the memory module has been locked n place by the DIMM slot

ATX 24-pn Power Connector: JPWR1

Ths connector allows you to connect an ATX 24-pn power supply. To connect the ATX

24-pn power supply, make sure the plug of the power supply s nserted n the proper

orentaton and the pns are algned. Then push down the power supply 󰘰rmly nto the

You may use the 20-pn ATX power supply as you lke. If you’d lke to use the 20-pn

ATX power supply, please plug your power supply along wth pn 1 & pn 13.

13.+3.3 V 1.+3.3 V 14.-12V2.+3.3 V 15.Ground 3 .Ground16.PS-ON #

Ths connector s used to provde +12V power.

7.+12V3.Ground5.+12V 1. Ground8.+12V 4 .Ground6.+12V 2 .Ground

Make sure that all the connectors are connected to proper ATX power supples to en-

sure stable operaton of the manboard.En-12

mouse/keyboard DIN connector s for a PS/2

There s a CMOS RAM on board that has a power supply from external battery to keep

the system con󰘰guraton data. Wth the CMOS RAM, the system can automatcally

boot OS every tme t s turned on. If you want to clear the system con󰘰guraton, use

the button to clear data. Press the button to clear the data.

Make sure that you power o󰘯 the system before clearng CMOS data.

After pressng ths button to clear CMOS data n power o󰘯 (G3) state, the system wll

audo transmsson to external speakers through a coaxal cable.

Ths SPDIF (Sony & Phlps Dgtal Interconnect Format) connector s provded for dgtal

audo transmsson to external speakers through an optcal 󰘰ber cable.

The USB (Unversal Seral Bus) port s for attachng USB devces such as keyboard,

mouse, or other USB-compatble devces. Supports data transfer rate up to 480Mbt/s

up to 5 Gbt/s (SuperSpeed).

If you want to use a USB 3.0 devce, you must use the USB 3.0 cable to connect to

LAN The standard RJ-45 LAN jack s for connecton to

the Local Area Network (LAN). You can connect a

network cable to t.

LED Color LED State Condton

Left Yellow O󰘯 LAN lnk s not establshed.

On(Steady state) LAN lnk s establshed.

On(brghter & pulsng) The computer s communcatng wth another computer on the LAN.

Green O󰘯 10 Mbt/sec data rate s selected.

On 100 Mbt/sec data rate s selected.

Orange On 1000 Mbt/sec data rate s selected.

These audo connectors are used for audo devces. It s easy to d󰘯erentate between

audo e󰘯ects accordng to the color of audo jacks.

Lne-In (Blue) - Lne In, s used for external CD player, tape-player or other

Lne-Out (Green) - Lne Out, s a connector for speakers or headphones.

Mc (Pnk) - Mc, s a connector for mcrophones.

Seral ATA Connector: SATA1~6

Ths connector s a hgh-speed Seral ATA nterface port. Each connector can connect

to one Seral ATA devce. * The MB layout n ths 󰘰gure s for reference only. SATA2

Please do not fold the Seral ATA cable nto 90-degree angle. Otherwse, data loss may

occur durng transmsson.

Chasss Intruson Connector: JCI1

Ths connector connects to the chasss ntruson swtch cable. If the chasss s opened,

the chasss ntruson mechansm wll be actvated. The system wll record ths status

and show a warnng message on the screen. To clear the warnng, you must enter the

BIOS utlty and clear the record.

The fan power connectors support system coolng fan wth +12V. When connectng the

wre to the connectors, always note that the red wre s the postve and should be con-

nected to the +12V; the black wre s Ground and should be connected to GND. If the

manboard has a System Hardware Montor chpset on-board, you must use a specally

desgned fan wth speed sensor to take advantage of the CPU fan control.

Please refer to the recommended CPU fans at processor’s o󰘲cal webste or consult

the vendors for proper CPU coolng fan.

CPUFAN1, SYSFAN1, SYSFAN2 support fan control. You can nstall

Fan cooler set wth 3 or 4 pns power connector are both avalable for CPUFAN1,

Front Panel Audo Connector: JAUD1

Ths connector allows you to connect the front panel audo and s complant wth Intel

Front Panel Connectors: JFP1, JFP2

These connectors are for electrcal connecton to the front panel swtches and LEDs.

The JFP1 s complant wth Intel

Front USB Connector: JUSB1, JUSB2

Ths connector, complant wth Intel

I/O Connectvty Desgn Gude, s deal for con-

nectng hgh-speed USB nterface perpherals such as USB HDD, dgtal cameras, MP3

players, prnters, modems and the lke.

* The MB layout n ths 󰘰gure s for reference only.

USB 2.0 Bracket (optonal)

Seral Port Connector: JCOM1

Ths connector s a 16550A hgh speed communcaton port that sends/ receves 16

bytes FIFOs. You can attach a seral devce.

Ths connector connects to a TPM (Trusted Platform Module) module (optonal). Please

refer to the TPM securty platform manual for more detals and usages.

* The MB layout n ths 󰘰gure s for reference only.

Clear CMOS Jumper: JBAT1

There s a CMOS RAM onboard that has a power supply from an external battery to

keep the data of system con󰘰guraton. Wth the CMOS RAM, the system can automat-

cally boot OS every tme t s turned on. If you want to clear the system con󰘰guraton,

set the jumper to clear data.

JBAT1 Keep Data Clear Data

You can clear CMOS by shortng 2-3 pn whle the system s o󰘯. Then return to 1-2

PCIe (Perpheral Component Interconnect Express) Slot

The PCIe slot supports the PCIe nterface expanson card.

PCI (Perpheral Component Interconnect) Slot

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

comply wth PCI spec󰘰catons.

When addng or removng expanson cards, make sure that you unplug the power sup-

ply 󰘰rst. Meanwhle, read the documentaton for the expanson card to con󰘰gure any

necessary hardware or software settngs for the expanson card, such as jumpers,

swtches or BIOS con󰘰guraton.

PCI Interrupt Request Routng

The IRQ, acronym of nterrupt request lne and pronounced I-R-Q, are hardware lnes

over whch devces can send nterrupt sgnals to the mcroprocessor. The PCI IRQ pns

are typcally connected to the PCI bus pns as follows:

Order1 Order2 Order3 Order4

Ths chapter provdes basc nformaton on the BIOS Setup program and allows you to

con󰘰gure the system for optmum use. You may need to run the Setup program when:

An error message appears on the screen durng the system bootng up, and

requests you to run BIOS SETUP.

You want to change the default settngs for customzed features.

The tems under each BIOS category descrbed n ths chapter are under contnuous

update for better system performance. Therefore, the descrpton may be slghtly

d󰘯erent from the latest BIOS and should be held for reference only.

Upon boot-up, the 1st lne appearng after the memory count s the BIOS verson. It s

usually n the format:

E7640AMS.xxx 062011 where:

1st dgt refers to BIOS type as E = EFI

2nd - 5th dgt refers to the model number.

6th dgt refers to the chpset as I = Intel, N = nVda, A = AMD and V = VIA.

7th - 8th dgt refers to the customer as MS = all standard customers.

xxx refers to the BIOS verson.

062011 refers to the date ths BIOS was released.

Power on the computer and the system wll start POST (Power On Self Test) process.

When the message below appears on the screen, press <DEL> key to enter Setup.

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

If the message dsappears before you respond and you stll wsh to enter Setup, restart

the system by turnng t OFF and On or pressng the RESET button. You may also

restart the system by smultaneously pressng <Ctrl>, <Alt>, and <Delete> keys.

If you 󰘰nd a rght ponter symbol appears to the left of certan 󰘰elds that means a sub-

The BIOS setup program provdes a General Help screen. You can call up ths screen

from any menu by smply pressng <F1>. The Help screen lsts the approprate keys to

use and the possble selectons for the hghlghted tem. Press <Esc> to ext the Help

The Man Menu allows you to select from the setup functons.

Use ths menu for basc system con󰘰guratons, such as tme, date etc.

Use ths menu to setup the tems of the BIOS specal enhanced features, ntegrated

perpherals, power management and PC health status.

Use ths menu to specfy your settngs for frequency/voltage control and overclockng.

Use ths menu to read/ 󰘱ash the BIOS from storage drve (FAT/ FAT32 format only).

Use ths menu to set supervsor and user passwords.

please select [Yes] and press<Enter> to load the default settngs for optmal system

please select [Yes] and press<Enter> to save the con󰘰guratons and ext BIOS

Ths menu s for advanced users who want to overclock the manboard.

Current CPU / DRAM Frequency

These tems show the current clocks of CPU and Memory speed. Read-only.

Adjust CPU FSB Frequency

Ths tem s used to adjust the CPU FSB frequency (n MHz).

Ths tem s used to adjust CPU clock multpler (rato). It s avalable only when the

processor supports ths functon.

Adjusted CPU Frequency

It shows the adjusted CPU frequency. Read-only.

Ths tem s used to adjust CPU-NB rato.

Adjusted CPU-NB Frequency

It shows the adjusted CPU-NB frequency. Read-only.

AMD Turbo Core Technology

Ths technology automatcally ncreases the frequency of actve CPU cores to mprove

Ths tem s used to adjust the DRAM frequency. Settng to [Auto], the system wll detect

the DRAM Frequency automatcally.

Adjusted DRAM Frequency

It shows the adjusted Memory frequency. Read-only.

Ths 󰘰eld has the capacty to automatcally detect the DRAM tmng.

Press <Enter> to enter the sub-menu.

Ths settng controls the DRAM command rate.

tCL Ths controls the CAS latency, whch determnes the tmng delay (n clock cycles)

before SDRAM starts a read command after recevng t.

tRCD When DRAM s refreshed, both rows and columns are addressed separately. Ths

setup tem allows you to determne the tmng of the transton from RAS (row address

strobe) to CAS (column address strobe). The less the clock cycles, the faster the

tRP Ths settng controls the number of cycles for Row Address Strobe (RAS) to be

allowed to precharge. If nsu󰘲cent tme s allowed for the RAS to accumulate ts

charge before DRAM refresh, refreshng may be ncomplete and DRAM may fal

to retan data. Ths tem apples only when synchronous DRAM s nstalled n the

tRAS Ths settng determnes the tme RAS takes to read from and wrte to memory cell.

tRTP Tme nterval between a read and a precharge command.

tRC The row cycle tme determnes the mnmum number of clock cycles a memory row

takes to complete a full cycle, from row actvaton up to the prechargng of the actve

tWR Mnmum tme nterval between end of wrte data burst and the start of a precharge

command. Allows sense ampl󰘰ers to restore data to cells.

tRRD Spec󰘰es the actve-to-actve delay of d󰘯erent banks.

tWTR Mnmum tme nterval between the end of wrte data burst and the start of a column-

read command. It allows I/O gatng to overdrve sense ampl󰘰ers before read

tRFC Ths settng determnes the tme RFC takes to read from and wrte to a memory

Advanced Channel 1/ 2 Tmng Con󰘰guraton

Press <Enter> to enter the sub-menu. And you can set the advanced memory tmng

tRWTT02/ tWRRD2/ tWRWR2/ tRDRD2

These tems s used to set the memory tmngs for memory channel 1/ 2.

memory. It allows system to access multple banks smultaneously.

Ths tem allows you to set the Hyper-Transport Lnk speed. Settng to [Auto], the system

wll detect the HT lnk speed automatcally.

Adjusted HT Lnk Frequency

It shows the adjusted HT Lnk frequency. Read-only.

Ths tem allows you to select the number of actve processor cores.

Ths tem s used to unlock the CPU core. Please refer to the procedures below for CPU

core unlocked n BIOS setup.

Enter “Overclockng” and set “Unlock CPU Core” to [Enabled].

Save changes and ext the BIOS setup.

You wll see the “X4” (quad core) or “X2” (dual core for

Sempron seres only) durng POST.

Set “Adjust CPU-NB Rato” and

“HT Lnk Speed” to [x8].

AMD Phenom(tm) II X4 Processor

The CPU does not support CPU core

Ths CPU core unlocked behavor depends on the CPU ablty/ characterstc, and t

You can also check the core numbers n performance tab of Wndows task

Settng ths tem to [Enabled] allows the system to detect the maxmum FSB clock and

to overclock automatcally. If overclockng fals to run, you can try the lower FSB clock

for overclockng successfully.

When the manboard’s clock generator pulses, the extreme values (spkes) of the pulses

EMI generated by modulatng the pulses so that the spkes of the pulses are reduced

If you do not have any EMI problem, leave the settng at [Dsabled] for optmal system

stablty and performance. But f you are plagued by EMI, select the value of Spread

Spectrum for EMI reducton.

The greater the Spread Spectrum value s, the greater the EMI s reduced, and the

system wll become less stable. For the most sutable Spread Spectrum value, please

consult your local EMI regulaton.

Remember to dsable Spread Spectrum f you are overclockng because even a slght

jtter can ntroduce a temporary boost n clock speed whch may just cause your

overclocked processor to lock up.

DRAM Voltage/ NB Voltage/ CPU Voltage/ CPU-NB Voltage

These tems are used to adjust the voltage of CPU, Memory and chpset.

Press <Enter> to enter the sub-menu.

Overclockng Pro󰘰les 1/ 2/ 3/ 4/ 5/ 6

Press <Enter> to enter the sub-menu. In the sub-menu, these tems are used to save

the current settngs, and you can to load the settngs from the stored pro󰘰le.

When overclockng has faled, settng ths tem as [1, 3] wll allow system to reboot

1/ 3 tmes wth the same overclocked con󰘰guraton. If overclockng has faled every

tme, the system wll restore the defaults.

CPU Technology Support

Press <Enter> to enter the sub-menu. The sub-menu shows the nstalled CPU

technologes. Read only.

The Cool’n’Quet technology can e󰘯ectvely and dynamcally lower CPU speed and

requred to double con󰘰rm that:

C1E Enable ths tem to reduce the CPU power consumpton whle dle. Not all processors

support Enhanced Halt state (C1E).

HT Incomng/ Outgong Lnk Wdth

These tems allow you to set the Hyper-Transport Lnk wdth. Settng to [Auto], the

system wll detect the HT lnk wdth automatcally.

Take out the Drver/Utlty DVD that s ncluded n the manboard package, and place

utlty and follow the pop-up screen to complete the nstallaton. The Drver/Utlty DVD

Drver menu : It provdes avalable drvers. Install the drver by your desre and to

Please vst the MSI o󰘲cally webste to get the latest drvers and BIOS for better system

1 optscher S/PDIF-Ausgang

8 USB 2.0 Anschlüsse

2 USB 3.0 Anschlüsse

Front Panel I/O Connectv-

Frontpanel Anschlüsse: JFP1, JFP2

LEDs des Frontpanels. JFP1 erfüllt de Anforderungen des “Intel

Front Panel I/O Con-

PCI (Perpheral Component Interconnect)

Current CPU / DRAM Frequency

Zegt den derzetge Takt der CPU und de Geschwndgket des Spechers an. Nur

Anzege – kene Änderung möglch.

Adjust CPU FSB Frequency

Adjusted CPU Frequency

Adjusted CPU-NB Frequency

Adjusted DRAM Frequency

CPU Technology Support

http://www.ms.com/ser-

Current CPU / DRAM Frequency

Adjust CPU FSB Frequency

Adjusted CPU Frequency

Adjusted CPU-NB Frequency

Adjusted DRAM Frequency

CPU Technology Support

http://www.ms.com/servce/cpu-support/

Front Panel I/O Connectvty Desgn.

Front Panel I/O Connectvty Desgn.

Current CPU / DRAM Frequency

Эти пункты показывают текущую частоту CPU и скорость памяти. Только для

Adjust CPU FSB Frequency

Adjusted CPU Frequency

Adjusted CPU-NB Frequency

Adjusted DRAM Frequency

CPU Technology Support