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570 squeal when vsync is off

post #1 of 12
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Hey all so I was playing sc2 and turned vsync off and my graphics card started to squeal not sure if it was the fan. I turned vsync on and tested and the sound went away. I also turned vsync off in oblivion and it started to squeal. So basically everygame I play if i turn vsync off the card squeals. Any ideas what causes this?
post #2 of 12
Turning vsync off allows the card to render as many frames per second as it possibly can, meaning higher load. Higher load means higher temps, and if your GPU fan is throttled by temp, it probably just means your fan is spinning up to a higher RPM.
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post #3 of 12
its normal..its the capacitors on your card or in your PSU squealing..it just means that its loaded..
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post #4 of 12
Yes, it's usually referred to capacitor squeal (although the actual offending part I think is technically a choke aka coil) and it's a fairly common problem. Doesn't mean the card is broken or breaking or anything, it's just annoying.

Generally you only hear it when FPS is really high, hence why v-sync causes it to go away. Another way is to bump up the IQ settings so the framerate goes down. I've seen people say there's way to get rid of it ... things like putting nail polish on the offending part ... but never tried it, not sure if it's totally safe or not. You should maybe do some research on the google and see what the interwebs thinks about the subject.
Edited by brettjv - 5/4/11 at 12:44am
    
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post #5 of 12
Quote:
Originally Posted by brettjv View Post
Yes, it's usually referred to capacitor squeal (although the actual offending part I think is technically a choke aka coil) and it's a fairly common problem. Doesn't mean the card is broken or breaking or anything, it's just annoying.

Generally you only hear it when FPS is really high, hence why v-sync causes it to go away. Another way is to bump up the IQ settings so the framerate goes down. I've seen people say there's way to get rid of it ... things like putting nail polish on the offending part ... but never tried it, not sure if it's totally safe or not. You should maybe do some research on the google and see what the interwebs thinks about the subject.
i have heard of that part where you put a nail polish or a hardening compound on it..but is bumping the AI settings help??haven't tried that..
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post #6 of 12
It may be one of two things (sometimes it can be both):

1. Coil whine from the PSU;

2. Coil whine from the GPU;

V-sync solves both of the problems because it generally caps the load. If your card can render a game at 90fps but you only have a 60Hz monitor, then V-sync on will cap the fps at 60.

If your card is not being able to render a tough game at 60fps, V-sync can sometimes even go as far as capping it to 30fps, since that is the exact half of 60 fps, so the image stays in sync with the monitor's refresh rate. That, of course, also reduces the load on both the GPU and PSU.


You can try and open the case and try to hear where the noise is coming from. Some people think it's the GPU, and it turns out it's the PSU, and vice-versa.

By the way, did you buy a reference GTX570 ? If you did, it's likely you have exposed coils, instead of the more refined coils in more expensive, non-reference models. If that is the case, then it could be one of the coils making noise. More expensive models come with solid-state chokes (for example Gigabyte's Ultra Durable VGA line of cards) that can manage higher currents than traditional chokes, and they can also "help reduce the high frequency buzzing noises that occur when running under high electrical currents." - taken from Wikipedia

Coils vibrate under load, both on the GPU and PSU. A bit of special material is used to secure them in place so it does not vibrate, but sometimes it's not enough or is put in the wrong place. If you can track down where the noise is coming from, you can try using nail polish or a glue gun. Look it up on how to do it properly. Don't apply too much tough, because the coil needs to cool down. Coils are only held in place with the right amount of glue at the critical places and not all around, so they can cool down.
Edited by tpi2007 - 5/4/11 at 1:09am
 
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post #7 of 12
Quote:
Originally Posted by kairi_zeroblade View Post
i have heard of that part where you put a nail polish or a hardening compound on it..but is bumping the AI settings help??haven't tried that..
That will only work if your CPU can't handle the load. AI is handled by the CPU. If it starts being a bottleneck, the GPU won't render as many frames, as it's waiting for the CPU to finish processing it's share. Therefore there is less load on the system - both PSU and GPU.
 
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post #8 of 12
Quote:
Originally Posted by tpi2007 View Post
That will only work if your CPU can't handle the load. AI is handled by the CPU. If it starts being a bottleneck, the GPU won't render as many frames, as it's waiting for the CPU to finish processing it's share. Therefore there is less load on the system - both PSU and GPU.
i see..thanks..so for setups that don't have a bottleneck issue it will be useless to tinker on..
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post #9 of 12
I didn't say AI, I said IQ settings. Raising IQ will lower FPS, and hence accomplish something similar to v-sync.

And I agree w/what TPI said
    
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post #10 of 12
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Hmm thanks for all the info ya some games I was getting like 600 fps:S Guess it makes sense.
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