Originally posted by: INM8
When i was using my stock x2 4400+ hsf i had it running between 1000-2000rpm max via speedfan and temps never went past 48 C. With it oced to 2450mhz, temps went up to 51-52C. At 1000rpm, it is almost silent, and at 2000rpm it still remains fairly quiet, but at right (2-3am) when everything was dead quiet i could here a slight whine coming from it. Anything above 2000rpm is plain annoying, it starts getting real load. If you can keep temps good with it running below 1600rpm all the time you can avoid the whine. Its pretty good for a stock HSF, but it is obviously not made to be quiet
btw: Idle was around 34C with CNQ enabled
I tried a 80mm to 120mm fan mod too, it didnt work because the fan setup on it seems to be rectangular, not square...That was probably done deliberatly on the OEM's part.