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Audio buzzing when GPU under heavy load

post #1 of 3
Thread Starter 
Hi,

So I just upgraded my 560 ti to a gigabyte 970 g1 and have just one issue with the whole thing. I first noticed this when playing a game with the new card. Whenever I am looking at anything graphically intensive, there is a buzzing noise that comes from my speakers or headphones, whichever I am using for my audio. It is not coil whine or anything like that, although I do notice that as well. It is not game specific, but the buzzing noise is louder on more intensive games. For example, in csgo the buzz is quiet but still there, Dying Light highest settings the buzzing is louder. The noise also occurs when I run fur mark so I know it's not just games.

I have tried reinstalling the audio and video drivers. Have also looked at all wires from the psu to the mobo/gpu and fiddled with them to make sure they are correctly plugged in and not loose. I'm really at a loss for what could be causing this, as it did not happen with the 560 ti. My bet is on the psu but I can't see why it would not be able to handle the upgrade.

I have provided my specs below. If anyone has any advice or questions, please post. Any help would be appreciated.

CPU | [Intel Core i5-2500K 3.3GHz Quad-Core Processor] - 4GHz overclock, 3.3 stock does not fix the issue.

Motherboard | [Gigabyte GA-Z68A-D3H-B3 ATX LGA1155] running latest bios

Memory | [G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600]

Hard Drive | [Samsung Spinpoint F3 1TB 3.5" 7200RPM] x2

Video Card | [Gigabyte GTX 970 G1] not overclocked

Power Supply | [PC Power and Cooling Silencer Mk II 750W]
post #2 of 3
Try different speakers/headphones and try different soundcard if you have one. Onboard soundcards are a crime and should be banned.
post #3 of 3
What you experiencing is probably EMI ( Electromagnetic Interference). If you have external sound card you could try to move it as far as possible from graphics card. Otherwise you could try to use MSI_util to set your graphics card and sound card into MSI ( more on that http://forums.guru3d.com/showthread.php?t=378044).
Don't forget to make registry backup and system restore point or other kind of backup. Not every piece of hardware can work in this mode and you might end up with BSOD that won't let you boot up Windows.

Im afraid it won't solve your problem though as this is common problem with 970 due to their AIB construction. I have same problem with SoundBlaster Z ( using lowest possible amplification on speakers control and highest on windows lower the noise coming through speakers).

Recently I tried ASUS 970 Black DCU II (same PCB as ASUS 980 strix) and this problem was almost gone but I had to return it unfortunately. I think you should look for gpu which has better quality power section and coils. Other solution is USB soundcard, problem will be completely gone.
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