overheating because of overclocking and poor air-flow in case.
add some case fans and your fine...
I actually ordered the gigabyte windforce yesterday because I've seen it has amazing performance and stays VERY cool....but I've still been going back and forth between the FTW and windforce. I think I can still change my order to the FTW. I just realized that Gigabyte Windforce sli really isn't an option later if I want, but the FTW is....hmmm.