The 8350 and 7970. Gaming is all about that GPU and the 7970 is faster than the 760 and the 8350 and i5 are pretty much the same performance in most games. http://www.newegg.com/Product/Product.aspx?Item=N82E16814202008
7970 for 319.99 ( a steal and like 50 bucks more than a 760)
FX-8350+ 990FX mobo 340-360 bucks.
i5-4670k+ equivalent Z87 mobo 400 bucks.
So the AMD option 659-679 dollars. Intel option 650+ dollars. So you will get a faster single threaded quad core and a slower GPU with the intel option. AMD option you will get 8 cores( Each core isnt as fast as intel but you get 8) and the 7970 is faster than the 760 which is better for gaming.
Also what games are you playing? What Resolution? is it 60hz or 120hz?