Hi, I was playing a game and I heard this vibration coming from inside my PC, I checked to see if anything was touching the fans and couldn't find anything. When I quit the game and the GPU fans started slowing down the vibration went.
So I tried different fan speeds to see if I can get them to vibrate and they did at 65 -67%
I checked to see if the GPU was mounted securely and it was and everything seems fine.
So not sure what it can be. I'll happily accept a replacement for a 680