Noctua NH- U9DX i4 (Xeon) Ultra Quiet CPU cooler

Noctua NH- U9DX i4 (Xeon) Ultra Quiet CPU cooler
Item# 72377
Regular price: $69.95
Sale price: $67.95
Availability: Usually ships the same business day

Product Description

Noctua NH- U9DX i4 (Xeon) Ultra Quiet CPU cooler

Noctua NH-U9DX i4 Ultra Quiet Xeon CPU Cooler

Noctua's DX line of coolers has become a default choice in high performance quiet cooling solutions for Intel Xeon CPUs. The latest i4 revision supports LGA2011 (both Square ILM and Narrow ILM), LGA1356 and LGA1366 based Xeon platforms and the 9cm model NH-U9DX i4 comes equipped with two of Noctua's award-winning NF-B9 premium fans with PWM for automatic speed control. Standing 125mm tall, the NH-U9DX i4 combines outstanding quiet cooling efficiency with full 4U compatibility. Fitted with the professional SecuFirm2™ mounting system and bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-U9DX i4 forms a complete premium quality package for quietly cooling Xeon based workstations and servers.

Image shows the Noctua NH-U9DX i4 quiet CPU cooler front.

Noctua NH-U9DX i4 Quiet Xeon CPU Cooler.

Image shows the Noctua U9DX i4 quiet CPU cooler front.

Noctua NH-U9DX i4 Heatsink with twin NF-B9 PWM Fans.

Noctua NH-U9DX i4 Features

Award-Winning NH-U Series. Award-Winning NH-U Series
The NH-U9DX i4 is based on the latest version of Noctua's award-winning NH-U9 coolers. First introduced in 2005, the NH-U series has become a standard choice for premium quality quiet CPU coolers and won more than 400 awards and recommendations from leading international hardware websites and magazines.
4U Compatibility. 4U Compatibility
Sporting four heatpipes, a surface area of more than 3800cm² and two premium grade 92mm fans, the NH-U9DX i4 provides a significant upgrade in quiet cooling performance compared to common 2U solutions. At the same time, its 125mm height makes it fully compatible with standard 4U cases.
2x NF-B9 92mm Premium Fan. 2x NF-B9 92mm Premium Fan
The award-winning NF-B9 92mm premium fan features Noctua's renowned SSO bearing as well as advanced aerodynamic optimizations such as Bevelled Blade Tips and Vortex-Control Notches. In order to achieve its superb quiet cooling capability, the NH-U9DX i4 comes equipped with two NF-B9 fans in a push/pull setup.
PWM support and Low-Noise Adaptor. PWM support and Low-Noise Adaptor
The NF-B9 92mm fans supplied with the NH-U9DX i4 support PWM for convenient automatic speed control through the mainboard. In addition, the maximum fan speed can be reduced from 1600 to 1300rpm using the supplied Low-Noise Adaptors for even quieter operation.
SecuFirm2 Mounting. SecuFirm2™ Mounting System
Noctua's SecuFirm2™ mounting systems have become synonymous with quality, safety and ease of use. Supporting Intel's LGA2011 (both Square and Narrow ILM), LGA1356 and LGA1366 Xeon platforms, the SecuFirm2™ mounting included with the NH-U12DX i4 guarantees perfect contact pressure and maximum convenience on all sockets.
NT-H1 Thermal Compound. NT-H1 Thermal Compound
Having received more than 100 awards and recommendations from hardware journalists around the world, Noctua's NT-H1 is a proven professional grade TIM solution that provides minimum thermal resistance, excellent ease of use and outstanding reliability.
6 Years Warranty. 6 Years Warranty
Noctua products are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the supplied NF-B9 models feature an MTBF rating of more than 150.000 hours and the entire NH-U9DX i4 package comes with a full 6 years manufacturer's warranty.

Noctua NH-U9DX i4 CPU Cooler Specifications

Noctua NH-U9DX i4 CPU Cooler Specifications
Socket compatibility Intel LGA2011 (Square ILM & Narrow ILM), LGA1356, LGA1366 (wtih Xeon backplate)
Height (without fan) 125 mm
Width (without fan) 95 mm
Depth (without fan) 71 mm
Height (with fan) 125 mm
Width (with fan) 95 mm
Depth (with fan) 95/120* mm
Weight (without fan) 460 g
Weight (with fan) 550/640* g
Material Copper (base and heat-pipes), aluminum (cooling fins), soldered joints & nickel plating
Fan compatibility 92x92x25
Scope of Delivery
  • 2x NF-B9 PWM premium fan
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kit
Warranty 6 Years

NF-B9 PWM Fan Specifications

NF-B9 PWM Fan Specifications
Model Noctua NF-B9 PWM
Bearing SSO2
Rotational Speed (+/- 10%) 1600 RPM
Rotational Speed with L.N.A. (+/- 10%) 1300 RPM
Min. Rotational Speed (PWM) 300 RPM
Max. Airflow 64.3 m³/h / 37.85 cfm
Max. Airflow with L.N.A. 52.6 m³/h / 30.96 cfm
Max. Acoustical Noise 17.6 dB(A)
Max. Acoustical Noise with L.N.A. 13.1 dB(A)
Input Power 0,96 W
Voltage Range 12 V
MTBF > 150.000 h


  • The DX models (NH-U12DX i4, NH-U9DX i4, NH-U12DX 1366, NH-U9DX 1366) can only be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). The cooler is thus incompatible with Xeon 3500 and Core i7 mainboards that don't have such a backplate. Please choose our normal retail models with LGA1366 support (or NM-I3 kit) for these mainboards.

  • There are two different types of ILM (Independent Loading Mechanism) for Intel's LGA2011 based Xeon CPUs: Square ILM with 80x80mm hole spacing and Narrow ILM with 56x94mm hole spacing. The mounting system of the NH-U12DX i4/NH-U9DX i4 is fully compatible with both types.