I just built a new PC (i7 4790k, installing a GTX970 soon.. currently have a GTX580 installed, 2 HDs in RAID, 2 SSDs, bluray burner, etc.) and the whole thing is dead silent except for my PSU! Been having a hard time trying to find a good one that actually shuts up even after reading the recommended list.
First, I bought a Corsair HX850. The fan was loud and ended up being more noticeable because it would be silent for a few minutes and then ramp up. Further, under heavy graphics load, the electrical noise coming off it was pretty bad.
Second, I bought a Seasonic X-850. It arrived busted in the mail. RMA'd it, got a second one. The fan is real quiet however, the electrical noise coming off this thing is giving me a splitting headache! Plugging a second monitor into the system even makes it much worse! Oddly enough, under heavy load, the noise seems to go away!!!!! It's under light load like browsing the web that it sits there screeching! I would have much rather had fan noise then this loud electrical crap!
I'm really lost as to what to try next as I'm afraid I will get another dud. I don't care how energy efficient this thing is at this point, or how much it costs, I just want silence! I write this with a pounding headache because of my sensitivity to electrical noise is pretty bad... would rather have a louder fan then the buzzing..