Noctua NH-D9 DX-4677 4U XEON CPU Heatsink and Fan
Web ID: 40091
Noctuas DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-D9 DX-4677 4U features a larger, custom-designed contact surface for LGA4677 platforms. Based on the proven, 92mm size NH-D9L heatsink and equipped with two of Noctuas award-winning, PWM controlled NF-A9 92mm fans (high-efficiency 2500rpm version), it combines strong performance with excellent compatibility for 4U systems and other space-restricted applications.
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Manufacturer Warranty: 6 Year
Manufacturer PN: NH-D9 DX-4677 4U
Manufacturer Website
DX series for Intel Xeon
First introduced in 2008, Noctua’s DX line CPU coolers have become a standard choice when it comes to quiet, premium grade air cooling solutions for Intel Xeon processors. Thanks to their superior acoustic efficiency, they are ideal for workstations and servers that run in noise sensitive environments (e.g. audio/video production, content creation, engineering, etc.).
Customised for LGA4677
The new DX-4677 line coolers are dedicated, customised solutions for Intel’s professional LGA4677 platform, which makes them an ideal fit for both 4th generation Xeon Scalable CPUs (Platinum, Gold, Silver or Bronze) and w9, w7, w5 or w3 series Xeon processors for workstations.
Enlarged contact surface
At 70x56mm, the heatsink’s copper contact surface is more than double the size of the standard model. Tailored to fit the enormous integrated heat-spreaders (IHS) of Intel’s LGA4677-based processors, this customised design allows for an optimal heat flow from the CPU over the base to the heatpipes and on to the cooling fins.
SecuFirm2™ mounting system with standard Intel parts
Integrating standard Intel parts such as the anti-tilt mechanism, Torx® T30 PEEK nuts and the CPU-specific carrier frames (included with boxed retail CPUs and available separately for tray CPUs), the cooler’s mounting system is fully compliant with Intel’s installation guidelines and provides a familiar mounting procedure for experienced LGA4677 users. A Torx® T30 mounting tool is included.
Compatible with E1A, E1B and E1C carrier frames
LGA4677 processors require plastic CPU carrier frames for installation, which are included with retail boxed CPUs and available separately via Intel sales partners for tray CPUs. The SecuFirm2™ mounting for LGA4677 is compatible with all types of carriers (E1A, E1B, E1C).
Compact 92mm size for best compatibility
Thanks to its compact footprint (95x95mm with center fan only, second fan can be installed on either side depending on available space) and a total height of only 134mm, the NH-D9 DX-4677 4U provides excellent PCIe compatibility and is small enough to fit most 4U size rack-mount enclosures.
Airflow parallel to long axis of the socket
The NH-D9’s direction of airflow is parallel to the long axis of the LGA4677 socket, so it is ideal for systems where the exhaust fans of the chassis are in this direction. For systems that require the airflow to go perpendicular to the long axis of the socket, please choose the NH-U9 DX-4677 4U.
Dual NF-A9 HS-PWM fans
The NH-D9 DX-4677 4U is equipped with two of Noctua’s award-winning NF-A9 92mm fans in their high-speed 2500rpm HS-PWM variant. This push/pull dual fan configuration makes it possible to achieve a level of cooling performance that is remarkable for such a compact cooler and comes close to the bigger NH-U12S DX-4677.
PWM support and y-cable
The NF-A9 premium fans supplied with the NH-D9 DX-4677 4U support PWM for convenient automatic speed control through the motherboard, which allows them to run near silent at lighter loads and to speed up only when necessary. The supplied y-cable makes it possible to power and control both fans simultaneously from a single motherboard fan header.
Pre-applied NT-H1 thermal compound
Noctua’s much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance and outstanding long-term stability. Having the paste pre-applied to the heatsink base ensures optimal bond-line thickness and saves precious time in installation. Ideal for system integrators!
6-year manufacturer’s warranty
Noctua products are renowned for their impeccable quality and outstanding longevity. True to this legacy, the NH-D9 DX-4677 4U heatsink is built to last, and like all Noctua fans, the supplied NF-A9 units feature an MTTF rating of more than 150,000 hours. The entire package comes with a full 6-year manufacturer’s warranty.
Product Details
Notes and warnings
Please note that the NH-D9 DX-4677 4U is a dedicated version for the Intel LGA4677 socket. Due to its customised larger base, it cannot be used on smaller sockets and is incompatible with Noctua’s mounting kits for these sockets. Please refer to our socket compatibility overview for details.
Please also note that installing an LGA4677 processor and heatsink requires a plastic CPU carrier frame. 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.
Cooler Specification
Intel Xeon LGA4677
Height (without fan)
134 mm
Width (without fan)
95 mm
Depth (without fan)
95 mm
Weight (without fan)
584 g
Height (with fan)
134 mm
Width (with fan)
95 mm
Depth (with fan)
120 mm
Weight (with fan)
769 g
Material
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
134
Max. TDP
see NSPR
Fan compatibility
2x 92x92x25mm
Scope of delivery
- 2x NF-A9 HS-PWM premium fan
- NA-YC1 4-pin PWM y-cable
- NT-H1 high-grade thermal compound (pre-applied)
- SecuFirm2™ mounting kit for LGA4677
- NM-SMT5 Torx® T30 mounting tool
6 Years
FAN Specification
Model
Bearing
Max. rotational speed (+/- 10%)
2500 RPM
Min. rotational speed @ 20% PWM (+/-20%)
400 RPM
96,3 m³/h
Max. acoustical noise
30,6 dB(A)
Input power (max.)
1,68 W
Voltage range
12 V
MTTF
> 150.000 h
