I have dual asus gtx 760s and they perform great and all..... but whenever running a fairly demanding game or benchmark, I get a buzzing sound which I have discovered to surely be coil whine. I've tested the fans and they make literally zero sound at full speed. My question is if it's worth RMAing. People have told me this happens with all cards. Also the case I have now has an opening on the side for 2 120mm fans, so the sound is easier for me to hear. I'm going to be buying a new case regardless, which has no cutouts grills on the side of it. Do you think this will help reduce the noise I hear? Is there any brand of GPU that has no/little coil whine? Any other suggestions would be great. I did already RMA the cards once, and got back similar results :/