@comp addict, in AMD config, if we go for AMD X2 - 5000+ at 3.1k, you will 4k reduced... But the E5200 is probably more comparable to X2 5600+... However, with the 780G motherboard for AMD, you get very capable onboard IGP that will allow you to hold off your graphics card purchase for a little later... But with G31 for Intel, I dont think it is that good...
And you forgot mouse and keyboard for which it is a good idea to allocate at least 1 to 1.5k if you want to do serious gaming...
Arun