i'm running amd 3000+ 64bit @stock 2 gig, stock heatsink, and never see my idle temps over 110f, normal is 96. i cut a couple of holes in the top of my case and now have a total of 13 fans, but it's alot quieter than it was with the 90mm cpu fan i was runnig. instead of focusing on the cpu so much, work on getting the hot air out of the case.