Also, does repeated alt-tabbing tax the graphic card? Was playing Swtor and was alt-tabbing back and forth because I was doing some photoshop work. Ventrilo was also running. Anyway, and first time this happened, I alt-tabbed while I was on a speeder route and bam, when I went back to the game, it was just a black screen with purple dots and lines all over and the game crashed with a player talking in vent looping over and over. Did a hard reset and problem didn't recur (played for 6 hrs the next day and the bug didn't reappear). My graphics card is new and I'm also playing a more taxing game (Battlefield) for hours on end without this happening. Was thinking it had something to do with swtor.
Still fine I think, but if it has a decent non reference cooler model such as MSI Twin Frozer. I think there is a problem. But if it's reference cooler then I think it's totally acceptable, but not very good at all.
See if updating the driver and setting fanspeed a bit more helps .