I agree with both the responses. Below is my system now. Earlier, the only difference was that I had the Stock AMD CPU cooler. I had same issue but my CPU temperature was way low. The Stock cooler's fan was noisy like a jet turbine. Then; I posted lot of questions in more than one forum. Everyone suggested buying an aftermarket cooler. I bought the Cooler Master Hyper N520 CPU cooler from FRYs for $39 and installed it. This resolved the noise issue in my PC. This also resulted in lower CPU, GPU and HDD temperatures... Hope this helps.
As a reference, please see my post and system information. My post/ thread also has a public access Picasa web album in which I put screen shots of temperature before and after new cooler install and of my system as well.
My Post/Thread in AMD forum - ">"><br ">&l......./me...terthread=y
NZXT Gamma Case with 120 MM Exhaust Fan
AMD Phenom ii X4 955 BE
Cooler Master Hyper N520 CPU Cooler
Arctic Silver 5 Thermal Compound
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory
XFX ATI Radeon HD 5770 (Juniper XT) 1GB GDDR5
OCZ 750 W PSU
Samsung 320 GB HDD
Windows 7 Pro
07:09 PM by