Hi, so basically got this new PSU, and I just noticed it makes a weird noise, it sounds a bit like coil whine. I noticed it goes away when I put it in eco mode. It might not be the fans since there's another noise that goes away when i turn on eco mode which is the general humming. hard to explain but if anyone could help that'd be great.

750W

 
It's sooo hard to tell what it is, can't be the bearing as when I turn the pc onto it's side it doesn't stop. It's possible its's just the fan giving out the noise because when I turn eco mode off as far as I know the fans go off, and that's when the noise dissapears together with the other humming 

I am going to borrow the thread, I seem to have about the same problem! When I don't have ECO mode on and the fan is spinning, there is a wierd noise, not that noticeable when the case is on and such but still really anoying. Anyone know what may cause this?
 
http s://www.youtube.com/watch?v=qhXzkY9EeeQ
 
Here is a video of the noise.
 
Sorry for intruding your post but it seemed like about the same issue.

really, am I just paranoid? there is a small and fast ticking sound that I hear at least.
 
PS. it's in the beggining of the clip, at the end I switched to ECO mode and then it stops. That way I Believe it's the fan. Now I run the PSU in Eco mode, but I don't know if that is a good solution if the PSU is indeed faulty.