I was playing WoW and i noticed choppy animations and then my screen went black. So i asked my friend who's really good with this asked me how hot my gpu was, 75'c. Said to turn it up, fan speed on dynamic sucks so i bumped up the speed to 70%. Is this a heat problem or a gpu problem? My fan speed on dynamic was 40-45%. Setting it higher i haven't seen any choppy animations, + i'd been playing the game for 6+ hours.