I see 2 problems with this, price, the 7850K is to expensive as is DDR3 2133, and the lower you go (like DDR3 1333/1600, 7700/7600) the closer you get to the 5670 in performance, the other problem is, the CPU performance is not comparable to ivy bridge i5 for gaming, so he could be in need of a CPU and GPU upgrade soon, with the i5 he could use the 5670 for now, it would be slow for newer games anyway (as the kaveri IGP) but the CPU should be fine, and the gain would be great on any CPU bound game compared to the A64 (basically anything, the k8 X2 was a bottleneck for me back in 2007/2008 with slower cards), and later he could buy a nice VGA, even something like a 260x is way way faster than Kaveri or the 5670.... but it's up to him, if he is not planning a GPU upgrade soon, perhaps the i5 is "overkill" but still nice to have.