Fired up Portal 2 last night after it completed download and let it select its settings.
Had Speedfan running too to look at the temps, had to break off to do something else but as I exited after about 5 minutes I noticed GPU temp had gone from about 42 to 50.
I've looked on EVGA's site but there is no detail, what is the max safe temp for this board.
My system just has CPU, PSU and GPU fans.