Need help with PSU buzzing

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Joined
29 Nov 2007
Posts
43
Hey,

I've recently noticed that I get a buzzing sound when I play games which is (as far as I can tell) coming from the PSU. I don't think it's simply the PSU fan because I can hear the buzzing change in pitch as a move the camera around within a game.

The PSU is a Corsair HX620W and the graphics card is an 8800GT, which I both RMA'd only to have no change in the noise. It's also much more noticable on some games over others, particularly on World in Conflict, which i only bought recently so I assume is why I've only recently noticed.

Admittedly this isn't a huge problem, and the noise is just audible above my fans but since it's directly dependent on the graphics being shown rather than simply temperature it is bothing me. Does anyone else get this, is it normal? If anyone has any ideas to help me on this I would appreciate it.
 
Ok, thanks. What do you mean by "a small buzzer" though, do you mean some kind of capacitor? Also, how do you track down exactly where on the board the noise is coming from? I don't want to risk damaging my card which, apart from the noise, runs my games beautifully.
 
Well after having a proper listen with the case open, I'm certain it is the card rather than the PSU. I've definitely got the power cable connected though, so it can't be that. If it is the buzzer though, what's it buzzing for? What's the error?
 
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