PrimeCooler MegaCool 5 AMD heatsink
 

http://www.a1-electronics.net/Heatsi...ega5_Dec.shtml


A small extract, if it helps.
"But all that said this PrimeCooler MegaCool 5 is still a decent heatsink which considering its small size and low power fan is not doing that bad if you bear in mind that it is only about 4 degrees Celsius behind in the heat range it is designed to work in."