I ran prime95 for about 15 minutes in blend mode (100% cpu usage) and my temps got to 69 degrees celcius. Idle is in the high 40's. I have a phenom 2 550 that is overclocked to 3.42Ghz. I keep finding mixed reviews about the temps I want to be at. This is an 80w processor btw. I have an aftermarket heatsink as well.