PSU makes buzzing sound when in games?

geon106

geon106

geon106

Associate
Joined
23 Dec 2010
Posts
415
Location
Newcastle, Staffordshire
Whenever I load up games, my PSU makes a sort of humming/buzzing sound. I thought it was its fan, possibly a loose bearing. But it only happens when in games and the noise changes as I move the mouse. If the screen flashes back(like loading screens etc) the noise stops until a picture is displayed again.

I've put my ear to the PSU and it is coming from that rather than anything else.

In Windows the noise isn't present at all. The system is fully stable and games work fine.

My specs are as follows:

PSU: XFX 750W
Motherboard: Asus P8768-V
CPU: Intel Core i5 2500K OC to 4.3Ghz
GPU: Radeon 7950 3GB Windforce Edition
SPU: Asus Xonar D2X

CPU temp on idle: 28oC Load: 34oC
Mobo temp on idle: 30oC Load 31oC
 
It is high pitch, but its not that loud. It is only just louder than the case fans.

The PSU is getting on a bit, its about 4 or 5 years old so quite old. I'd like to replace it but don't have the funds to yet.

Not sure if its from its fan(as it may just need cleaning etc) or from the internal components. The fan is spinning properly though
 
It's strange, as I navigate menus in a game the pitch changes along with when I move the mouse :S
 
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