i'm going to take a different approach here and recommend one of the new Llano chips from AMD.
the A8 beats the i3 in performance and the on-board graphics chip is really good for budget. it will also crossfire with, i think, the 6650 or 6670 (your choice) for good, cheap, single slot power graphics power.
we need to start thinking differently than the way we've always thought. i say, budget gamer? then go Llano and crossfire.
beyond that, 4 gigs of 1333 ram will do you fine.
*edit* oh, i'd expect the A8-3800/3850 + 6670 should be roughly $240-$270 american. i think you'd be very happy with the price/performance ratio of this setup.
*edit2* A quick breakdown of the AMD APUs.
go AMD all the way.Edited by nicodemus - 6/10/11 at 7:03am