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.

Cooler Specifications
Socket compatibility Intel LGA2011-0 & LGA2011-3 (Square ILM & Narrow ILM), LGA1356, LGA1366 (with 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/s) 550/640* g
Material Copper (base and heat-pipes), aluminium (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
FAN Specification
Model Noctua NF-B9 PWM
Bearing SSO2
Max. Rotational Speed (+/- 10%) 1600 RPM
Max. Rotational Speed with L.N.A. (+/- 10%) 1300 RPM
Min. Rotational Speed (PWM, +/-20%) 300 RPM
Max. Airflow 64,3 m³/h
Max. Airflow with L.N.A. 52,6 m³/h
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