So I am dealing with a RAM issue in another thread. I got RAM from OWC and was getting ECC Errors, so I'm having them ship new sticks. Supposed to get them tomorrow. Anyway, I downloaded smcFancontrol and Temperature Monitor to test things (along with Rember). Question on the Mac Pro fans. While running tests, I can get the memory up to 150-160F. How come the Mac Pro never seemed to increase the fans RPM? Does anyone know at what point the Mac Pro increases any of the fans? Does the temperature of the RAM + CPU + HDD have to equal a certain amount for a certain period of time to kick in? I can manually increase them with smcFanControl....but the Mac Pro never seemed to do it on it's own. I did run the extensive Apple Hardware Tests and those all passed (I even heard that testing the fans). Thanks! -Kevin Just curious.