Thermaltake Silent 939 K8 air cooler heatsink
 

This Silent 939 K8 is being marketed as a silent but powerful AMD Opteron, AMD Athlon 64, Athlon 64 FX, Sempron socket 754 / 939 processor heatsink for those of you who are not looking for the ultimate and usually noisy heatsink but for peace and quiet but still with an efficient heatsink for your computer.
at: http://www.a1-electronics.net/Heatsi...-939_May.shtml