I guess some perspective on some other comments here. I have a dell r720xd dual xenon’s 16 total cores 128gb ram it uses roughly 200watts per hour with the 11000w power supplies. it can get fairly loud when using lots processing power. I bought a 12u rack to mount it nicely in my office. It is also my guest bedroom, while everyone we have had doesn’t mind the noise not all guests would appreciate the white noise even with many of the cpu intensive stuff turned off and it as quiet as it goes. Fans full tilt would be obnoxious and hard to concentrate.