Fan never goes to "zero rpm" on HX750.

Hello.



I have a Corsair HX750.



I recently decided to get rid of my ugly "gamer" setup and go for a more clean look and adapt a non-tolerant noisy policy. This leads me to my question.



I was made aware that my PSU should have what you would call "zero rpm" mode for the fan. I would like to stress that there are no electrical buzzing or other anomalies detected by my ears. It is presumably just a very noisy fan. Unless the fan is so noisy I can't hear the electronics buzzing.. I don't know. :)



This makes me a bit sad since it kinda ruined my strategy and got me thinking there might be something I can do?



I tried cleaning it with an air compressor at a distance of about "cloud of dust" and not wanting to inflict damage to the internal components.



But it was to no avail, the fan is still making noise and it's very frustrating. I understand that it should only be quiet while under a certain percentage, for which I understand is about 20% or less? I measured the wall draw by using a "watt-o-meter" and it read about 34 watts being pulled. I tried leaving it on the table(fan to the side or facing up) to make sure it had completely no restriction to fresh air, but it did not make a difference.



Is there someone who can help me out here?



Thanks!