HX750 making a weird noise


Feb 15, 2012
Hey guys. So I just installed a new fan controller and some new fans and my PSU seems to be making a new noise! :eek: It is a very, very high pitched tone. I can get right next the to back of my computer and hear a high pitched almost squeal-like sound. The only reason I worry is bc is ismply was not doing this before! Any ideas?

p.s. I am only running a single 6950 and an i7 920 so i KNOW there is no way that thing is maxing out. (if that would even cause such a noise. thanks!
That's coil whine. Google it. Take the fans out and see if the noise persists, then try without the GPU. It's generally harmless, but fans shouldn't cause it.