I'm concerned about my cpu and case temprature. I've got a p4 1.8 ghz running at 40C idle and it raises up to 50C when playing games like gta3. My case temp when idle is always around 34 - 37C and raises up to 40-45C while playing. I really want to know if these temps are normal. I dont really think they are but maybe I'm just worrying for nothing. It drives me crazy when i see my cpu temp in 50C after playing. My case temp never reached 50C, until a few minutes ago while I was playing gta3. When I saw the temp sensor flashing i went crazy. My cpu has hfs attached and my geforce4 ti has fan attached. I installed a new fan but I dont know if it is blowing or exhausting. I'm planning to get a pin fan because the one I installed it is not. Could you plz help me!! Ps.: I bought thermal grease just in case i needed, I read the manual before installing my cpu and there was no need to add thermal grease. Do you think I might consider reinstalling the fanheatsink and add thermal grease this time??