NH-U14S DX-4677 - Computer Cooling Component Noctua - Free user manual and instructions

Product Type	CPU Cooler
Model	NH-U14S DX-4677
Brand	Noctua
Socket Compatibility	Intel LGA4677
Cooler Dimensions (with fan)	140 x 150 x 165 mm (W x D x H)
Weight	935 g (cooler only), 1.2 kg (with fan and accessories)
Fan Size	140 x 140 x 25 mm
Fan Speed	300 – 1500 RPM (with L.N.A. 1200 RPM)
Airflow	140.2 m³/h (with L.N.A. 114.6 m³/h)
Noise Level	19.2 – 24.6 dB(A) (with L.N.A. 14.9 – 19.2 dB(A))
Heatpipe Material	Copper (nickel-plated)
Fin Material	Aluminum
Base Material	Copper (nickel-plated)
Fan Connector	4-pin PWM
Included Accessories	Mounting kit for LGA4677, fan clips, Low-Noise Adaptor (L.N.A.), thermal paste (NT-H1), screwdriver
Maintenance	Clean dust from fins and fan using compressed air or soft brush every 6 months
Safety	Keep away from liquids; do not obstruct airflow; ensure proper installation to avoid short circuits
Spare Parts	Fan (NF-A14), fan clips, mounting kit, thermal paste available separately
Repairability	Fan is replaceable; mounting kit can be re-used for other sockets with additional parts
Warranty	6 years (manufacturer warranty)

Frequently Asked Questions - NH-U14S DX-4677 Noctua

Is the NH-U14S DX-4677 compatible with my Intel Xeon W-2400 processor?

Yes, the NH-U14S DX-4677 is designed for the Intel LGA4677 socket, which includes Xeon W-2400 and W-3400 series.

Does the cooler come with thermal paste pre-applied?

No, the cooler does not have pre-applied thermal paste. It includes a tube of Noctua NT-H1 thermal compound for manual application.

What is the maximum CPU TDP supported by this cooler?

The NH-U14S DX-4677 is rated for CPUs with a TDP (Thermal Design Power) of up to 220 watts under typical conditions.

Can I install two fans on this cooler?

Yes, the heatsink includes a second set of fan clips, allowing you to add a second NF-A14 fan for push-pull configuration to improve airflow.

How do I clean the cooler?

To clean, use compressed air or a soft brush to remove dust from the fins and fan. Avoid using water or solvents. Detach the fan if necessary for thorough cleaning.

Is the fan speed adjustable?

Yes, the NF-A14 fan uses a 4-pin PWM connector for automatic speed control. You can also use the included Low-Noise Adaptor to reduce maximum speed to 1200 RPM.

What is the weight of the cooler? Will it fit in my case?

The cooler weighs about 935 g (without fan) and has a height of 165 mm. Ensure your case has at least 165 mm of CPU cooler clearance.

Does the cooler support RAM with tall heatsinks?

The NH-U14S DX-4677 has a slim design that overhangs the RAM slots. It provides 45 mm of clearance for RAM modules, so most tall heatsinks are compatible.

Can I use this cooler with other sockets, like LGA1700?

This specific model (DX-4677) is only for LGA4677. For other sockets, you would need a different mounting kit or the standard NH-U14S. Check Noctua's compatibility list.

What should I do if the fan makes noise?

Ensure the fan is properly secured and not obstructed. Check for dust buildup. You can also use the Low-Noise Adaptor or adjust fan curves via BIOS. If noise persists, contact Noctua support.

USER MANUAL NH-U14S DX-4677 Noctua

Thank you very much for choosing the Noctua NH-U14S DX-4677.

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-U14S DX-4677!

Yours sincerely,

Ming

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:

Technical line 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.

Pure mechanical assembly diagram showing three stages of a component with mounting holes and internal springs (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 line drawing of a computer cooling fan assembly (no text or symbols)

Pure mechanical assembly diagram showing three stages of a component with arrows indicating direction (no text or symbols)

Technical line drawing of a computer cooling fan assembly (no text or labels)

Pure mechanical diagram showing two blocks with internal components and directional arrows, no text or symbols present.

Technical line drawing of a computer cooling fan assembly (no text or symbols)

Pure mechanical diagram showing two parallel plates with internal holes and directional arrows, no text or symbols present.

Connect the fans to the motherboard's CPU fan headers.

! 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-U14S DX-4677, 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