Hi everyone, New to the forums here, so thanks to everyone up front: My i5-750 that I OC to 3.5 ghz idles at about 37 - 43 C using RealTemp. My Lian Li case has a large fan in front blowing air in, two on top sucking air out, and one in the back also sucking out air. I have a Noctura fan for the CPU with both fans, one pushing air in and one sucking air out, so I'm thinking my CPU should be quite cool. No matter what, my fan speeds stay the same. I use the ASUS Fan Expert, and tried SpeedFan (or something like that) but my RPMs for the fans stay the same. I'm thinking I don't have the fans plugged into the right fan ports on the MOBO. I should be able to increase the speed of the Noctura and the main fan in front, right? When I turn on turbo on FanExpert absolutely nothing happens. In BIOS, all the fan settings are set to enabled. I'm really at a lose here. Could it be that PSU isn't strong enough? Any help would be greatly appreciated !!! BTW: My entire system I built about 6 months ago. Thank you all Lian Li case, W7 64-bit, ASUS P7P55D-PRO, i5-750 OC 3.5 ghz, Noctura heatsink, Radeon 5870, Antec 750 PSU, DDR3 1600 mhz.