My 1080 FTW is performing very well. No issue's at all. Runs very cool imo under full load (55 - 60C) at 70 - 75% fan speed.
If I could change one thing it would be the initial temp throttle point of 50/51C. That's a bit low I feel. If it didn't begin clocking down (due to temps) until 60C or higher, I'd never see much or any downclocking.