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Ringing noise when folding? Noisy crystal on mobo maybe?

post #1 of 13
Thread Starter 
OK, I openly admit this is bizarre...I have a core i5 2550k overclocked stable to 4.6Ghz, and I can load all the cores with Prime95 and the temps are well within bounds and I *don't* hear any noise. When I fire up FAH, as soon as the processes load up the cores, I hear this annoying high pitched whine. It is not coming from my speakers, because it is there if I unplug them. If I stop the FAH program, the ringing stops, if I restart the program the ringing comes back.

Only thing I can think of is a noisy crystal on the mobo, that only vibrates to the point of being heard when the FAH client begins. Odd that Prime95 does not elicit the same behavior.

Even as I type this, the ringing stopped, and I checked and FAH was sending a processed work unit. When it began crunching on the next, within 30 secs the ringing is back. LOL


I have a el-cheapo DVD player in another room that does the same thing - with the player on I can hear a high pitched whine even if the player is idle.
post #2 of 13
Just coil whine, probably from the PSU. Nothing to be concerned about but if the noise bothers you there's a few ways of fixing it. I recommend using a empty paper towel roll to isolate the whine, best method in my experience.
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post #3 of 13
Quote:
Originally Posted by -Apocalypse- View Post

Just coil whine, probably from the PSU. Nothing to be concerned about but if the noise bothers you there's a few ways of fixing it. I recommend using a empty paper towel roll to isolate the whine, best method in my experience.

The Nvidia gpu is most likely the source, if the op is also folding on the 550 ti.
    
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post #4 of 13
I had an Antec TP650w power supply that whined like yours when under load , but not when idle. Ive since upgraded to a Antec HCG 750w and i still from time to time get a little whine when under heavy load or specific programs ( far far less than before). I had contacted Antec a few weeks back now and they said that the coil whine is perfectly normal and nothing to worry about, it can often be caused by certain types of hardware ( eg GPU's ). While i had my TP650 to be sent off for testing i bought a 750W Antec psu and the same noise persists so i know its just my setup ( Nvidia GPU i think is culprit ).

I think what your experiencing is the same thing but don't hold me to that as it could be from another source. If it the noise is too annoying to bear then you might want to look at changing or upgrading PSU. Next time the noise begins try listening close to the psu and see if that is the source ?
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post #5 of 13
It is the Nvidia card. Try 7 GTX 460's in one room. I know the sound. wink.gif I don't fold like that any more. My Nvdia GTX 570 can still bring the sounds back to me, when I choose to fold with it.
    
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post #6 of 13

If you're talking about the crystal in your motherboard making the noise, that's not possible. First off, the oscillation of the crystal is not in the range where we humans can hear it. What you describe is coil whine, which happens all the time your system is on because of the parameters of a certain circuit in your system (could be everywhere where there's a coil). Apparently there is a coil in your system that gets fed a signal on which it likes vibrate but as the current increases it will vibrate with a greater amplitude making an audible electrical noise signal on top of the wanted signal.

 

It could be the PSU, GPU, motherboard or another component with coils mounted on the PCB. If you trace the coil you can do something about it, but depending on the means you might lose warranty. I never tried putting a paper between the coil windings but that could effectively dampen the oscillation so it might work and not void your warranty, I'm not sure if it's that effective seeing as it might fall off. For a more rudimentary approach, you could also glue the windings if possible (non conductive glue of course) to alter the oscillation frequency of the coil permanently or bend the coil a little out of shape (worst method).

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post #7 of 13
Thread Starter 
I am folding with both the i5 and the GTX550ti, so as many have stated it most likely is the GPU. I may try not folding on it to see. It is not easily bearable but i don't sit in the room when it is Folding.
post #8 of 13
I made a short video to of my 560 Ti last year to record the noise it used to make folding at 1065mhz @1.162v.
https://www.youtube.com/watch?v=uSZkLj6QbEA&feature=plcp

The GTX580 I use in the Team Competition, folding at 975Mhz @1.175v, is WAY worse!
My GTX470 makes noise too, but it is in tune with the ringing I have in both ears due to tinnitus, so I don't really notice it.
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post #9 of 13
Quote:
Originally Posted by hertz9753 View Post

The Nvidia gpu is most likely the source, if the op is also folding on the 550 ti.

PSUs are just as common to whine as GPUs, and being Nvidia has nothing to do with it.
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post #10 of 13
Quote:
Originally Posted by -Apocalypse- View Post

PSUs are just as common to whine as GPUs, and being Nvidia has nothing to do with it.

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.
    
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