This is going to be a bit hard to describe, but I will do my best. Back in January I got a Sapphire 5750. There have been 4 or 5 times where the card suddenly starts to make odd sounds. It sounds a little bit like bacon sizzling or a playing card stuck in the the fan blades. It usually goes away after a few minutes or if i restart the computer. I have checked the fan and there is nothing near it. When I do stuff on the screen the sounds changes a little. I have taken the side off of my case and listened to it and it is definitely coming from the video card. There does not seem to be any sort of a pattern as to when this occurs. The sound does not visibly effect the performance of the card (as far as i can tell). Has anyone had similar experiences?