Thermaltake Silent Boost K8 Heatsink
 

The Thermaltake Silent Boost K8 heatsink is a mainstream cooler for AMD Athlon64 and Sempron socket 754/939/940 processors. The heatsink is completely made of copper components for the metals' high thermal conductivity properties, and utilizes a Panaflo FBL08A12M fan for its lower noise generation. Installation is straightforward with the tool-free clip mechanism which locks on to all three tabs of the K8 retention frame solidly. Rotating a small cam lever then applies the necessary force on the K8 processor's integrated heat spreader that AMD's thermal design guidelines require.

http://www.frostytech.com/articlevie...articleID=1879

Frostytech & [M] have tested the Cooljag SF0-H rated with decent performance. [M] tested the CoolJag with both 70 and 80mm fans. It seems the CoolJag performs better this one.

http://www.madshrimps.be/?action=getarticle&articID=352