I have an MSI 875P Mainboard, P4 3.0. I rarely ever power my system down. It has run 24/7 for about a year with only occasional restarts. I run - 1 top, 3 rear and 1 side mounted exhaust fans and 1 front mounted intake. My CPU temp is approx. 46c/116f and my system temp is about 35c/96f. I live in Los Angeles and it is 90f outside and I have NO air conditioning. How am I doing..? My friends split on the subject 50/50. Please tell me that I am within appropriate tolerances for a system that is always running.