From X-bit lab's review
of that power supply unit:
The PSU is cooled by a 7-blade 120mm Yate Loon fan (D12SM-12) that has a rated speed of 1650 RPM.
The fan starts out at about 1300 RPM, which is not quiet. On the other hand, it doesn’t accelerate much at higher loads, never reaching even 1400 RPM.
Just be forewarned that the high electrical noise and ripple on that power supply will be accelerating the degradation of the electrolytic capacitors on your motherboard and graphics card.