CPU fan at 100% but fan speed keeps changing

[Vertico]

I have an EVGA 780i motherboard, Q6600, and an Arctic Cooler 7 Pro HSF.

In my BIOS I have manually set the fan speeds to 100%, however, when I boot into windows I can hear the CPU fan periodically change speeds. (speeds up then slows down).


This is extremely annoying. Any suggestions??

[Bwall]

Are you certain it's the CPU fan and not the fan on the video card as it sounds like what some of the newer Nvidia cards do.

[InspectahACE]

yea those video card fans are generally louder than the cpu fans..i know mine is the loudest of the whole bunch when i play a game or fold(Crysis obviously makes it happen).I do know the newer Nvidia cards do change the fan speed depending on the load

[Vertico]

I have confirmed that it is the CPU fan making the noise. I have it set at 100% but I can still hear the speed fluctuate...

Any suggestions?