I know this is in ok range for the AMD Athlon64 3700+ at stock speed, but my CPU is running at 30*C at idle and 46*C at load. I have the Zalman 7700 with AC5. I have been reading that it can be lower at a low. I have the Cooler Master Centurion 5 case. I have no spyware and no virus. I am running Windows XP. I have the fan in the back and front and where the funnel was at.