I figured it out for my setup !!!!!!! I have the same card, eVGA GTX 460 SC, and the squealing was driving me CRAZY It was mostly a squealing under heavy load (folding).thejamppa wrote:Thanks for this. I should try this when I can. 30% fan is pretty good in my Evga 460 SC but it always can be quieter. However I need to first figure out how to kill buzzing cards buzzing without killing the card. I got electric varnish that ends squealing when applied but if I apply it wrong place, my card becomes expensive paper weight.
I figured something on the card was vibrating at a certain frequency that was causing this problem. So I changed some frequencies around in afterburner and the noise is now completly GONE
I have it set to 800/1600/3800 (Core/Shader/memory). And the best part is : only one ot two °C change in temps (69°C @21°C ambiant, instead of 67°C), and no change in noise (35% fan speed) !
I think the vibration is still here, but at a higher frequency. In fact, when I tried lowering the clocks, the squealing started to turn into a buzzing.
Hope that helps !
[EDIT : certain work units while folding still produced a faint whine, so I bumped the frequencies a little more and I have yet to hear the whine again: Core/Shader/memory @830/1660/4000]