I will be building a Haswell PC build in June for with a budget of about $1200. The only thing I'm not sure on is if I should get the kepler rebrand 680 (770) or a 7970. I was going to get the 7970 because BF4 is a gaming evolved AMD title. So witch one should I get? If the new series of AMD cards comes out this year I don't mind buying them.