I recently upgraded from a gtx 960 to a 970. With the 970 i get this weird crackling electric sound sometimes in games when i push it really hard, never got it with the 960. I doubt its the psu using too much power beacuse the 970 barley uses more power than a 960 and i used to have a 560 ti and never had this problem. I know its not the fan because sometimes when i pause it goes away for a second then sometimes when i unpause it comes right back sometimes, and when my fans are 100 percent it dosn't get worse or anything. It dosn't happen all the time but happens sometimes. I did some research and it dosn't sound like coil whine, maybe it could be some weird variation with it. I hear i a little more with my small oc but still hear it with stock clocks. I don't really care about the noise because i use headphones, im just wondering if its hurting anything or if anythings wrong or its just some weird variation of coil whine that dosn't hurt anything.