Noctua NH-U12DO A3

Noctua's DO line of coolers has become a default choice when it comes to quietly cooling AMD Opteron CPUs. Upgrading both compatibility and performance, the new A3 model features Noctua's professional NM-A3 SecuFirm2™ mounting system that not only supports socket G34, C32 and F, but also allows to install the cooler turned by 90°. Thanks to six heatpipes, a performance optimised fin stack and its two premium grade NF-P12 120mm fans, the NH-U12DO A3 cools even the hottest high-end Opteron processors at minimum noise levels. Bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-U12DO A3 forms a complete premium quality package for quietly cooling AMD workstations and servers.

Specifications:
•Dimensions (without fan): 126 x 158 x 71 mm (BxHxT)
•Dimensions (with fan): 126 x 158 x 120 mm (BxHxT)
•Material: Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
•Weight (with / without fan): 800 / 1.140 g
•Heatpipes: 6x 6 mm
•Fan: 2x 120 mm NF-P12
Noise: 19,8 dB(A), 1.300 RPM, 92,3 m³/h
with L.N.A.: 16,9 dB(A), 1.100 RPM, 78,5 m³/h
with U.L.N.A.: 12,6 dB(A), 900 RPM, 63,4 m³/h
•Voltage: 12 V
•Compatibility: AMD G34, C32, F (3.5" & 4.1")

More info:
http://www.noctua.at/main.php?show=productview&products_id=38&lng=en&set=2