Just monitoring my Aerocool ExtremEngine 3T Black Case with 25cm Side Fan to see how well it does. It has a 2.12Ghz Pentium core 2 duo in it, which normally runs reasonably cool. I hadnt bothered putting the side on, or fastening up the front fan so the temps were in the region of 36 cpu/40 MOBO idling. Not bad, but its now got those fans fastened up and the temps are 24/30?
OK its not overclocked but those temps are definitely cool.