It has 2 fans as you can see from the picture. One of the fans is connected as the CPU fan and the other as a system fan. The stock speeds are 2000rpm and 1000rpm approx, respectively. I have adjusted the latter to the same as the cpu fan speed using speedfan software. However, I can't seem to go over 2000rpm on the CPU fan. Surely it should be able to go higher than this?
On my old pc, I have a standard single cooler master fan over my Q6600 and that would go up to 5000rpm if I disabled smart fan in the bios. Idle temps would go down to 25 degrees c (I have like 7 case fans).
Is there a fan control or smart fan option in my bios? My motherboard is: MSI X79A-GD-65 8D.
For the motherboard to control the fans, they must be 12V PWM (Pulse Width Modulation), that is the only requirement. If replacing those fans with more powerful ones, probably best to stick with 130mm's (if they can be found, not a highly sought after size - I checked my normal sources and could not find any that size - let alone more powerful ones)
There are utilities here for your mobo... http://www.msi.com/product/mb/X79A-GD65--8D-.html#/?div...
Holler again if you need more info, Hope this helped.