As the title says my GPU is running a bit warmer than it used to and I have not the slightest clue as to what the culprit is. As an example the highest it used to go while playing Overwatch, as of a few weeks ago, was 67C-68C, yet recently it's been getting up to 80C-85C. The fan profile is the exact same as I've had it since I can remember and the fan itself still runs like it always has. I've done everything I can think of such as dusting off the heat sink and even going as far as replacing the thermal paste without either really making a difference.  One thing that has changed is the fact that I didn't use it much for a couple of weeks as well swapping it in an out of my current PC into a new one, but I ended up putting it back in my current PC in the end. Currently I'm using my new PSU, but my temperature issue also showed up on my older PSU when I swapped the system between my two cases (it's back in the normal case now). Any ideas as to what I can try would be greatly appreciated.
 
As a recap I've done the following...
• Dusted off the GPU
• Applied new thermal paste
• Reinstalled Nvidia drivers
• Reseated PCI-E power cables
 

Sajin
Sounds like the pcb/cooler may be warped. Which 680 do you have?

I have the FTW+ 4GB with a backplate included so I don't know if that would or could even be an issue, but at this point it could be anything.
 
Update: Well for now I'm just using the lowest possible power target of 78% to keep the temperature down closer to normal and it seems to be working fine. At a power target of 100% the GPU hits 87C in Overwatch and setting it down to 78% it sits at 73C instead.