So I've got a 128 mb GeForce FX 5600 ... and Deus Ex 2 has made me consider a new graphics card, I'm thinking about selling my GeForce and buying ATI's 256mb 9800 XT.. The question is, I'll probably be spending about 300ish for the upgrade, now will it actually be worth it? Will I get any kind of serious increase in graphics performance, or should I just wait awhile and upgrade later?