It always depends on the games you are playing and the rest of the hardware you are using .
The AMD chips are more powerful than many people have given them credit for . They deliver weaker individual threads , but more of them .
In high resolution and detail gaming its common enough to get very similar FPS between intel quads and an FX 6300
http://www.techspot.com/review/734-battlefield-4-benchmarks/page6.html
Uses a the 6350 [ a mild OC of a 6300 ] and you are at 1 fps less than a 4770k
IMO the best $350 A mb/cpu/RAM combination is probably
http://au.pcpartpicker.com/p/qvkQ
Having said that if you want to play skyrim or starcraft an Intel dual core will probably work better