I purchased a Noctua NF-R8 to replace the CPU fan, installed SpeedFan and Prime95 and ran some tests. With the OEM CPU fan: -- Idle: 1025 RPM, 35-37 C (case fan 885 RPM) -- Prime95: 1365 RPM, 58/59 C (case fan 1145 RPM) With the Noctua NF-R8 PWM as the CPU fan: -- Idle: 520 RPM, 35-40 C (case fan 10...

Awesome, thanks! I don't know the specs of the current OEM fan, e.g., CFM or RPM. And, obviously, I want to make sure any replacement fan will keep the CPU and other components sufficiently cool. Would it be reasonable to (1) measure the current CPU temp, (2) replace the fan, (3) measure the new CPU...

Sorry for the confusion. When I said "stock" I meant the heatsink that came with the computer, which is custom-designed and looks pretty much like this: http://img04.taobaocdn.com/bao/uploaded/i8/T1IYzmXfdeXXbC9lg._112935.jpg_310x310.jpg -- see http://www.taobaodropshipping.com/goods-292747-Super-co...

Thanks a lot for the suggestions. I don't believe the BIOS supports PWM but, as you say, there are non-PWM alternatives. Would a 92mm fan generally be able to screw into the same holes as a 80mm fan? I was assuming my choices were limited to 80mm fans because I thought the screw hole placements woul...

I believe it's a standard 4-pin connector.

Thanks.

Hi all, I recently purchased a Lenovo Edge 72 sff with an i3 2120, using the onboard GPU (I'm not a gamer). Unfortunately, the high-pitched whine from the stock 80mm heatsink fan is driving me crazy. I can't replace the heatsink because the mounting holes are non-standard (65 mm). Can anyone recomme...