What is the best game my computer can play

Hello and I need help with a computer I am planning to get.  It have 3 GBs of ram a somewhat crappy Intel Pentium E2200, and a Sparkle 630 with 2gb of ram. I would also like to know if this computer can play battlefield 3 or world at war. Thanks in advance

sc2 2v2s 

how much are you paying for it, I wouldn't recommend buying 7 year old technology no matter how cheap it is


turn the resolution down you might be able to play some games on low/medium.

but as giga said if your looking at buying this dont a 300 dollar system would destroy this one