if i must prefer intel, maybe i choose i3 with h55 chipsets, while for AMD i choose athlon II X3\X4 with 880G\890GX Chipsets
Which one is better??
There is no clear cut to which one performs better. The I3 is a dual core on a better architecture and I think the clock speed is also higher, while the Athlon II is a weaker architecture but offers more cores.
Basically lightly threaded tasks the I3 will usually win, heavily threaded the Athlon II X3/X4 will usually win. Since your main focus will be on gaming the I3 will usually perform better. With that said, while only using a radeon 4670 your heavily bottlenecked by the video card on either system, and you won't see a difference between the 2.