For my build, I am having a little trouble on which GPU to get. I have narrowed it down to a Radeon HD 7850 2GB or a EVGA or Asus GTX 660 2GB, or should I get the EVGA or Asus GTX 670? or the EVGA or Asus GTX 760? Please help, what games can this GPU's play with a i5 3570? Will the CPU bottleneck the GPU? (I think it won't) How would these GPU's compare to the other ones? Thanks! P.S I need to be decided by your guy's answers, I am doing this for a school class, and I need to order it in the next week or so!