NH-D9 DX-4677 4U - Composant de refroidissement informatique Noctua - Free user manual and instructions

Product Type	CPU Cooler
Manufacturer	Noctua
Model	NH-D9 DX-4677 4U
Socket Compatibility	Intel LGA4677
Overall Dimensions (with fan)	92 x 92 x 65 mm (W x D x H)
Weight	470 g (with fan)
Fan Model	Noctua NF-A9 PWM
Fan Dimensions	92 x 92 x 25 mm
Fan Speed	400 - 2000 RPM (PWM)
Airflow	78.9 CFM (max)
Noise Level	22.8 dB(A) (max)
Bearing	SSO2 (Self-stabilising Oil-pressure)
Material	Copper (base and heatpipes) with nickel plating, aluminium fins
Max TDP	200 W (approximate, typical for 4U)
Warranty	6 years
Package Contents	NH-D9 cooler, NF-A9 fan, SecuFirm2 mounting kit, NT-H1 thermal paste, fan clips, screws, manual
Maintenance	Clean with compressed air or soft brush; avoid liquids
Special Features	4U chassis compatibility, low profile, excellent quiet cooling, SecuFirm2 mounting system

Frequently Asked Questions - NH-D9 DX-4677 4U Noctua

How is the NH-D9 DX-4677 4U installed?

The cooler uses Noctua's SecuFirm2 mounting system, which provides easy and secure installation on Intel LGA4677 sockets. Detailed instructions are included in the manual.

Is the NH-D9 DX-4677 4U compatible with LGA4677 sockets?

Yes, it is specifically designed for Intel's LGA4677 socket, used for Xeon workstation processors.

What thermal paste is included?

Noctua includes a tube of their high-quality NT-H1 thermal compound, known for excellent performance and longevity.

How do I clean the NH-D9 cooler?

Use compressed air to blow dust out of the heatsink and fan. A soft brush can be used for stubborn dirt. Avoid liquids to prevent damage.

What is the noise level of the cooler?

The included NF-A9 fan operates at a maximum noise level of 22.8 dB(A), making it very quiet even under full load.

Does the fan support PWM control?

Yes, the NF-A9 fan uses 4-pin PWM for automatic speed control from 400 to 2000 RPM, allowing silent operation at low loads.

What are the dimensions of this cooler?

The overall dimensions (with fan) are 92 x 92 x 65 mm (W x D x H), making it suitable for 4U chassis.

What warranty does Noctua provide?

Noctua offers a 6-year manufacturer's warranty for this cooler.

Will this cooler fit in a 4U server case?

Yes, with a height of only 65 mm, the NH-D9 DX-4677 4U is designed to fit in 4U chassis and similar low-profile systems.

Can I replace the fan with a third-party 92mm fan?

Yes, the heatsink accepts standard 92mm fans. However, ensure the replacement fan has adequate static pressure and PWM compatibility for optimal performance.

USER MANUAL NH-D9 DX-4677 4U Noctua

Thank you very much for choosing the Noctua NH-D9 DX-4677 4U.

Our DX line of coolers has become a default choice in high performance quiet cooling solutions for Intel Xeon processors, and I'm confident that you will be able to sense some of the research, attention and care we've put into making this product.

Enjoy your NH-D9 DX-4677 4U!

Yours sincerely,

This manual will guide you through the installation process of the SecuFirm2 ^TM mounting system step by step.

Prior to installing the cooler, please consult the compatibility centre on our website (ncc.noctua.at) and verify that the cooler is fully compatible with your motherboard.

Please also make sure that your PC case offers sufficient clearance for the cooler and that there are no compatibility issues with any other components (e.g. tall RAM modules).

Double check that the heatsink and fan clips do not make contact with the VGA card, other PCIe cards, motherboard heatsinks or any other components.

Noctua cannot be held responsible for any damage or losses caused by compatibility issues.

Should you encounter any difficulties, please check the FAQs on our website (www.noctua.at/faqs) and don't hesitate to contact our support team at [e-mail].

Required mounting parts:

Isometric technical drawing of a mechanical housing or bracket assembly (no text or symbols)

Plastic CPU carrier frame

Please note that installing an LGA4677 processor and heatsink requires a plastic CPU carrier frame such as the one shown above. These carrier frames are included with boxed retail CPUs and available separately via Intel sales partners for tray type CPUs. As different CPUs require different carrier frame types (E1A, E1B or E1C), please make sure to purchase the correct carrier frame for tray type CPUs.

Removing the fans1

Take the fans off the cooler. Install the NM-XFB9 brackets to the heatsink using the NM-SSC2 short screws.

Technical illustration of a dual-chamber cooling fan assembly with mounting holes and heat sinks (no text or symbols)

2 Assembly of carrier frame, CPU and heatsink & installation to the socket

Please follow the official Intel installation manual for how to attach the CPU carrier frame to the heatsink, insert the CPU to the carrier frame and install the CPU/heatsink assembly to the socket: www.intel.com/processorinstall

Note that while the Intel illustrations show a 2U heatsink, the Noctua NM-XFB9 brackets use the same mounting parts, so the procedure is identical for Noctua heatsinks.

When attaching the CPU carrier frame to the base of the heatsink, turn the heatsink upside down so that the base is facing upwards. Carefully put it down onto the tips of the heatpipes and secure it with your hand so that it cannot tilt and that the fins cannot get bent.

Remove the plastic protection cover from the base of the heatsink and be careful not to damage the layer of pre-applied thermal compound.

Caution: If you are not using the heatsink for the first time and it therefore doesn't have a fresh layer of pre-applied thermal compound anymore, you need to apply a thin layer of thermal compound to the CPU yourself before clipping it to the heatsink. If there are residual traces of previous thermal paste or thermal pads on your CPU or on the heatsink, please clean them off first.

Installing the fans3

Reattach the fans to the heatsink using the supplied fan clips:

Technical illustration of a dual-chamber cooling fan assembly with mounting holes and heat exchangers (no text or symbols)

Technical line drawing of a CPU cooling fan assembly with cooling fins and heat exchangers (no text or symbols)

Technical line drawing of a cooling fan assembly with internal cooling fins and heat exchangers (no text or symbols)

Connect the fans to the motherboard's CPU fan header(s). If necessary, use the supplied NA-YCI y-cable to connect both fans to one fan header.

! Removing the heatsink from the socket and the CPU from the heatsink

Please follow the official Intel guidelines for how to remove the heatsink and how to take off the CPU and carrier frame: www.intel.com/processorinstall

Transporting your system!

As it is not possible to reliably calculate or control the forces that act upon a system during transport (e.g. in shipping), we generally recommend, for safety reasons, taking the cooler off.

Noctua cannot be held responsible for any damage that may arise due to excessive stress during transport if you keep the heatsink installed.

! Warranty, support and FAQs

Even with high-grade products and strict quality control, the possibility of defects cannot be eliminated entirely. Therefore, we aim at providing the highest possible level of reliability and convenience by offering a warranty period of 6 years and direct, fast and straightforward RMA service.

Should you encounter any problems with your NH-D9 DX-4677 4U, please don't hesitate to contact our support team at [e-mail].

Please also consult the FAQ section on our website: www.noctua.at/faqs