So I'm looking for a graphics card for under $150. My local computer shop recommended the Radeon HD 7770 or the GTX 650. Would the 7770 be better than the 650? I don't really play high end games, just games like World of Tanks, or CS:GO, or S.T.A.L.K.E.R. My CPU is an Intel Core 2 Quad Q9550 2.83 Ghz with 4 GB or RAM. So would the 7770 or 650 be good or are their any better options?