I ran it for 4 hours, but you should do it for at least 10 hours apperantly (ideally, 24).
Played some Planetside 2 at maximum settings/vsync/etc and it ran butter smooth. CPU was at 43C and GPU at 60 C.
That good?
Need to check how to enable FPS-counter in-game.
Alt-F for Planetside show the FPS and what is currently bottle necking the game near the bottom left of your screen. And yes, those are good temps.