Why does this always happen to ME? iMac already showing some odd signs.

[M A V I C]

Jerry® wrote:
Right now iStat says the GPU heatsink and Diode are at 133 degrees C.

WOAHHH! that's waaaay too hot. Searching around, the PC version doesn't usually go over 90°. I just asked a friend who builds graphic workstations and servers with these cards and he thinks they should be in the 75-80° range most of the time. "RMA. No question about it. 133c is WAY too hot. 90c is getting dangerous."

133° is waaaay too hot. Your card is probably already damaged at this point. Are you seeing speed for the GPU fan? I'd take it back to Apple.