Noctua NH-U9DX Ultra Silent Xeon CPU Cooler

Based on Noctua's compact NH-U9 series and fitted with the award-winning NF-B9 fan and NT-H1 thermal compound, the NH-U9DX forms a complete premium quality package that provides excellent quiet cooling performance for 4U Xeon workstations and servers. The new SecuFirm2ª mounting system for socket 771 is highly convenient and makes the NH-U9DX a tailor-made drop-in replacement for standard Intel coolers. To make your Xeon systems quieter has never been so easy!

Tailor-made for Dual Xeon
The NH-U9DX's fin shape has been modified so that two coolers form an air duct on Dual Xeon setups, producing superior cooling performance at very low noise levels.

SecuFirm2ª for Socket 771 and 604
Completely pre-installed, the new SecuFirm2ª mounting system ensures maximum convenience and extremely short installation time.

Drop-in replacement for standard Intel coolers
SecuFirm2ª for Socket 771 is fully compatible with the original Intel installation system so that the NH-U12DX works as a simple drop-in replacement.

NF-B9 92mm premium fan
Featuring psychoacoustic optimizations and Noctua's premium-grade SSO-bearing, the award-winning NF-B9 is renowned for its exceptional quietness and long-term stability.

NT-H1 thermal compound
Noctua's much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease-of-use and outstanding reliability.

Heatsink Specifications
Dimensions (without fan): 122 x 96 x 65 mm (H x W x D)
Dimensions (with fan): 155 x 126 x 90 mm (H x W x D)
Weight (without fan): 1.10 Lbs
Weight (with fan): 1.30 Lbs
Material: Copper (base and heat-pipes)
Aluminium (cooling fins)
Soldered Joints & Nickel Plating
Application: Intel Xeon 5xxx & Xeon 7xxx
Socket Compatibility: Intel LGA 771 & mPGA 604 (10mm mounting-holes only)
Fan Compatibility: 92 x 92 x 25 mm (2 fans can be installed)

Package Contents
1x NH-U9DX Heatsink
1x NF-B9 fan
Mounting-clips for 2 fans
Ultra-Low-Noise-Adaptor (U.L.N.A.)
Low-Noise-Adaptor (L.N.A.)
NT-H1 thermal compound
SecuFirm2ª mounting kits for 771/604
Warranty 6 Years

Fan Specifications
Model Noctua NF-B9
Bearing SSO-Bearing
Rotational Speed (+/- 10%) 1600 RPM
Rotational Speed with L.N.A. (+/- 10%) 1300 RPM
Rotational Speed with U.L.N.A. (+/- 10%) 1000 RPM
Airflow 64.3 m_/h
Airflow with L.N.A. 52,6 m_/h
Airflow with U.L.N.A. 41,1 m_/h
Acoustical Noise 17.6 dB(A)
Acoustical Noise with L.N.A. 13.1 dB(A)
Acoustical Noise with U.L.N.A. 7.9 dB(A)
Input Power 1.32 W
Voltage Range 12 V
MTBF > 150,000 h

Compatibility Note:
The NH-U12DX is not compatible with the Intel D5400XS because this mainboard uses LGA775 mounting holes, so it requires LGA775 mounting hardware despite of its LGA771 sockets. Please choose our standard NH-U12P for use on the Intel D5400XS.