You can improve your system's perfomance overall by adding more RAM (especially if you have a memory draining game running), but you can't improve the quality of the video card by adding more RAM. I have an integrated, shared video card on my old computer (4MB ATi RAGE II, yeah, I mean OOOLD) but adding more RAM does not allow the memory card access more. Add the RAM anyway, because the RAM the video card uses can't be used for other stuff, like loading the game data and that can be even worse than a crap video card. Hope I helped!