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Ringing noise when folding? Noisy crystal on mobo maybe? - Page 2

post #11 of 13
Quote:
Originally Posted by hertz9753 View Post

I never had coil whine in any of my PSU's. Do AMD gpu folders complain about coil whine? No. When you stress an Nvidia gpu with folding it will chirp like a hot cricket.
Sapphire Radeon HD 7970 3Gb: http://www.youtube.com/watch?v=d7Oliy3asjU
Corsair AX1200: http://www.youtube.com/watch?v=el3erHbPvD0

Just because you haven't seen it doesn't mean it's not there. I just got done calming a friend who was freaking out about his 7950 whining and a few months ago I had a corsair AX750 start whining on me when I used OCCT but I couldn't reproduce it elsewhere so I let it be. My 570 does it when playing games where the FPS goes past ~150 but no where else.

It's just a matter of hitting the right capacitors at the right frequency.
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post #12 of 13
Quote:
Originally Posted by -Apocalypse- View Post


Sapphire Radeon HD 7970 3Gb: http://www.youtube.com/watch?v=d7Oliy3asjU
Corsair AX1200: http://www.youtube.com/watch?v=el3erHbPvD0
Just because you haven't seen it doesn't mean it's not there. I just got done calming a friend who was freaking out about his 7950 whining and a few months ago I had a corsair AX750 start whining on me when I used OCCT but I couldn't reproduce it elsewhere so I let it be. My 570 does it when playing games where the FPS goes past ~150 but no where else.
It's just a matter of hitting the right capacitors at the right frequency.


Caps don't whine though. faulty or poorly chosen caps may cause the coil to whine though due to second order effects. But yes this has nothing directly to do with nVidia. It's just that you need a large current and a transient circuit with the right caps to make coil(s) go crazy on the data signal. Actually the whine is always there, the current is just not always strong enough. I do know GF100 has high leakage -> high current flowing through the board causing coil whine when folding (not necessarily when gaming or stress testing). My HD 4890 and some cheap Coolermaster PSU did this as well.

 

Any circuit with a coil and cap will/can do this.

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post #13 of 13
my 560ti sequels like a dieing cat, folds all day every day. ow well. ur just stuck with it really, short of rma for to much electronic noise ...
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