i3-3220 with gtx 650 1gb ddr5 OR athlon ii x4 740 with HD 7770 ddr5

[TKBDragin]

As the title say. Lets consider there is no other differences in hardware, what is better, i3-3220 with gtx 650 1gb ddr5 OR athlon ii x4 740 with HD 7770 ddr5.
I am also interested in further expanding both GPU and CPU.
I know that AMD CPUs are cheaper so even if i3 allows me to go further without changing motherboard, maybe it is worth to once change motherboard and then go with AMD?
It is supposed to be gaming PC but so far I can't afford anything more than this. Do not ask for budget, I am not interested in building PC atm, I don't have anything yet 😛

 

[XCalinX]

x4 740 + 7770. you can step it up to a 650ti if you can, if you cant you will be fine with a 7770. but get at least 2gb of vram.