The Intel in this case. The G630 is a sandy bridge chip, these things are kicking all sorts of *** across AMD's low end line. I normally prefer AMD stuff (not that my sig would show it) but am currently building a machine for my girlfriend and went intel with a G850 (slightly faster version of the G630) because there just isn't an argument to make for the AMD line.
If your into gaming Toms has a monthly article that they do showing where each processor ranks as of this month. In the cheap category the G630 takes the cake.
http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106.html