with a budget of 700 tops an fx and top gfx is out the question aim for a 3500 939 if you deside you could build buy the gigabyte 3d1 on overclockers or ebuyer this system rocks 350 board and gfx 120 for a gig of good ram kingston is fine though and a lot cheaper 170 for chip leaves enough for a hdd im sure you got optical and a case somewhere lol lol benchmarks on this system far and away exceed the cast of the componants just check this out
http://www.giga-byte.com/VGA/FileLis...050107_3d1.htm