Coil whine.... PSU or GPU?

[Thomieboy]

Hello everybody,

 

I recentrly started hearing a high pitched noise when putting my system under load. Yesterdag I tought it was coming from my GPU (Asus GTX770). But now I think it's from my PSU (Be Quiet - 730W Pure Power CM). 

How do I know for sure ?  :huh:

 

The sound changes when doing something, like in the menu going to other screens. When minimizing or closing the game, it stops. 

 

Any help is much apreciated! 

 

 

(Sorry for bad English)

[madscientist56]

Don't want to stick your head in your pc and listen?..... understandable, use a lapel mic or your headset if you have one and put the mic next to both while recording, then listen to which one has a louder whine

[KR_king]

Stick your head in, it's the easiest way to know.

Or try putting your cpu only under heavy use, if it draws enough power and it's your psu that coil wines you'll hear it.
Not sure if cpus are able to drawn enough power to do that tho.

[WilliamDB]

I solved my coil whine by upgrading my PSU. I went from a corsair 700Watt with an 80 plus certification, to a Seasonic 760Watt with a 80Plus Platinum certification. Now the loudest sound under load is my case fan.

[Faa]

GPU's only coil whine under load. So if your system is whining at idle its pretty much the psu. Make sure to test without the C states by simply changing the windows power plan to high performance. Boards often coil whine as well with offset voltage though.

[REDMAFIA]

If you have another PC in the house try installing the GPU in it to see if it replicates. Could even be the MOBO.