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Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U12S DX-3647 features a larger, custom-designed contact surface and supports both square and narrow type LGA3647 platforms. Based on the proven, 120mm size NH-U12S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A12x25 120mm fans, it provides an excellent balance of performance, compatibility and quietness of operation. Topped off with the professional SecuFirm2™ mounting system and pre-applied NT-H1 thermal compound, the NH-U12S DX-3647 forms a complete premium quality package for quietly cooling LGA3647 based Xeon workstations and servers.
 

Please note that the NH-U12S DX-3647 is a dedicated version for the Intel LGA3647. Due to its customised larger base, it cannot be used on any other sockets and is incompatible with Noctua’s standard mounting kits.

Details

	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 sockets Thanks to its recessed lower fins, the NH-D15 provides 64mm clearance for tall memory heatsinks in single fan mode, making it compatible with most high end RAM modules on the market. In dual fan mode, the NH-D15 should be used with standard height RAM (up to 32mm).
	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.

General

Notes and warnings:

Please note that the NH-U12S DX-3647 is a dedicated version for the Intel LGA3647. Due to its customised larger base, it cannot be used on any other sockets and is incompatible with Noctua’s standard mounting kits.

Cooler Specification

Socket compatibility:	Intel Xeon LGA3647
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
Max. TDP	See TDP guide
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
Warranty:	6 years

FAN Specification

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

• Excellent Performance, compatibility and quietness of operation for LGA3647- based Xeon workstation and servers

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Noctua NH-U12S DX-3647 CPU Cooler

• Brand: Noctua
• Product Code:NH-U12S DX-3647
• Availability:Please contact us

• ¥16,245

• Ex Tax:¥14,768