My system runs idle at 36 c. - cpu and 35 c. - case. My room temp is probally 72 - 75 F. Is it normal for case temp to be that much different? If so what else could I do to bring it down? I have 2 fans on the bottom front (which seem useless due to front of case not allowing much clearance)as intake, 2 in the back under power supply blowing out, 1 fan mounted in the cd drive bays as intake along with a blow hole in middle side as exhaust. All fans except blow hole fan are 3 inch(might be 3 1/4). Should I use a larger fan like the one on the blow hole for exhaust in the back instead of the 2 3 inch ones (the fan I have on the blow hole came from an old power supply, so it is bigger than the others. I have afew more of these.