So I've already gone through 4 PSU's (Two of them being of a different brand) and my Coil Whine is still a pressing issue for me. Recently I turned vysnc on one of my games cause it was a hot day and I didn't want my gpu running all willy nilly. The coil whine disappeared and everything was fixed... is this a GPU issue? Because the coil whine only happens when my Vsync is off and I know that's not suppose to happen. If it is the problem I'm going to RMA my 780 ASAP.