I'm not a serious gamer so would it be worth the 760 for games like minecraft, borderlands, black ops, and Team Fortress two? Or would the 660 be good?
For those games it probably is not worth spending the extra $100 for the 760 as they aren't really all that graphically demanding. The 760 would last you longer though if you plan on picking up some newer titles further down the line, especially once the new console generation gets into full swing and the previous generation platforms are dropped.