Noctua NH-U9 DO AMD Opteron CPU Cooler

Based on Noctua's NH-U9B series and fitted with their award-winning Vortex Control fans and NT-H1 thermal compound, the NH-U9 DO form a complete premium quality package that provides outstanding quiet cooling performance for AMD Opteron workstations and servers. The NH-U9 DO's SecuFirm mounting system screws directly to the standard backplate and makes the NH-U9 DO a simple drop-in replacement for AMD stock coolers.

Can be turned by 90° for optimal compatibility and positioning
The NH-U9 DO can be installed rotated by 90° to allow for an optimal positioning of the cooler and to evade compatibility issues on dual socket motherboards.

Drop-in replacement for standard AMD coolers
The NH-U9 DO's SecuFirm mounting system screws directly to the standard Socket F backplate in order to facilitate the installation process.

The award-winning NF-B9 premium fan
Featuring psychoacoustic optimisations 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.

Specifications
Socket compatibility - Socket K8 (754, 939, 940) and Socket F (if the hole spacing is 88.9mm) 
Height (without fan) - 122 mm 
Width (without fan) - 96 mm 
Depth (without fan) - 65 mm 
Height (with fan) - 122 mm 
Width (with fan) - 96 mm 
Depth (with fan) - 90 mm 
Weight (without fan) - 500 g 
Weight (with fan) - 590 g 
Material - Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating 
Fan compatibility - 92x92x25 (2 fans can be installed) 
Fan Model - Noctua NF-B9