$500 Gaming PC Help

i just whant to know if this is a good pc for playing games like BF3 http://pcpartpicker.com/user/zoura20/saved/1nJS and other graphicaly intence games smoothly and with a good FPS count this is my first build and i do plan on upgrading in the future. I was thinking of replaceing the  AMD Phenom II X4 955 Black 3.2GHz Quad-Core CPU with the Intel Pentium G620 2.6GHz Dual-Core CPU but i am still not sure if it will be good for the PC though tell me what you think 


I tweaked your list a little please take a look http://pcpartpicker.com/p/MKzE

This will run bf3 at a reasonable frame rate.---- http://pcpartpicker.com/p/MKK2

The hd7770 will strugle even on low setings, you have a hd7850 in this one but it will cost a little bit more

 Some 1080p gameplay with a hd 7850 http://www.youtube.com/watch?v=aP7mvSRX-Tk

Allso the  AMD Phenom is a million times better than the Dual-Core intel (its one of the best AMD chips there is) and bf3 is set up for 4core cpus and will use them better than most games