What is the best 7970 performance wise right now? I am curious, there are so many different ones by so many OEMs. I don't care for noise, it doesnt bother me at all. I just want to know out of the box which 7970 will be the fastest. I am thinking about buying a 7970 since my 5870 can't handle playing games and watching tv shows on my other screens at the same time.