What would be considered the CPU fan? We bought a new heat sink thats huge and says it runs around 2200 rpm's at max with a little knob you turn, but it runs at 900 rpm's at max.
So, PSU issue? Or heat sink issue?
Thermaltake - 120mm CPU Cooling Fan - CL-P0401
As you can see, the fan is built into the heat sink. The only other fans I see in the computer are 1 on the GPU and 1 on the PSU.