Noctua NH-U12S DX-3647 120mm CPU Cooler

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 LGA3647
The new DX-3647 line coolers are dedicated, customised solutions for Intel’s professional LGA3647 platform, which makes them an ideal fit for both Skylake-SP based Xeon Scalable CPUs (Platinum, Gold, Silver or Bronze, Purley series) and Xeon-Phi processors (code names Knight’s Landing or Knight’s Mill).

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 LGA3647-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.

Supports square and narrow type LGA3647-0 sockets
The heatsink’s SecuFirm2™ mounting system includes two sets of brackets in order to support both square and narrow type LGA3647-0 sockets. Thanks to pre-installed mounting screws and the included processor clips (square type and narrow type without Omni-Path fabric connector, with fabric connector on request), the installation procedure is easy, quick and secure.

120mm size for excellent performance and compatibility
With five heatpipes and two next-generation NF-A12x25 120mm fans, the NH-U12S DX-3647 achieves outstanding cooling performance while maintaining excellent compatibility: At 158mm height and 125mm width, it is short enough to fit most modern tower cases and stays clear of the top PCIe slot on many motherboards.

Dual NF-A12x25 PWM fans
The NH-U12S DX-3647 is equipped with two of Noctua’s award-winning, next-generation NF-A12x25 120mmm fans. This exquisite, state-of-the art push/pull dual fan configuration allows it to achieve a remarkable level of quiet cooling performance despite its relatively compact size.

PWM support and y-cable
The NF-A12x25 premium fans supplied with the NH-U12S DX-3647 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-U12S DX-3647 heatsink is built to last, and like all Noctua fans, the supplied NF-A12x25 units feature an MTTF rating of more than 150,000 hours. The entire package comes with a full 6-year manufacturer’s warranty.

Technical Detail
Brand : Noctua
Modal : NH-U12S DX-3647 

Technical Spec
Socket compatibility : Intel Xeon LGA3647-0
Height (without fan) : 158 mm
Width (without fan) : 125 mm
Depth (without fan) : 45 mm
Weight (without fan) : 626 g
Height (with fan) : 158 mm
Width (with fan) : 125 mm
Depth (with fan) : 97 mm
Weight (with fan) : 1018 g
Material : Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
NSPR : 157
Max. TDP : see NSPR
Fan compatibility : 120x120x25

Scope of delivery 
2x NF-A12x25 PWM fan
4-pin Y-cable
NT-H1 high-grade thermal compound (pre-applied)
SecuFirm2™ mounting-kit for LGA3647
Noctua metal case-badge

FAN Specification
Model : 2x Noctua NF-A12x25 PWM
Bearing : SSO2
Max. rotational speed (+/- 10%) : 2000 RPM
Min. rotational speed @ 20% PWM (+/-20%) : 450 RPM
Max. airflow : 102,1 m³/h
Max. acoustical noise : 22,6 dB(A)
Input power (max.) : 1,68 W
Voltage range : 12 V
MTTF > : 150.000 h
Warranty 6 Years