I actually meet the minimum requirements of STALKER. However, with it's performance issues, Ima gonna wait until it's patched a bit before looking into it. ; Plus it needs 10 GB of HD space, and I've got 3 free atm.
I'm currently playing Red Faction and Soldier of Fortune. Got a couple old games so I could play something at 60 FPS and not worry about and perfomance issues. After Doom 3 (which is a giant festering piece of shit of a game and ID's programming team should be ASHAMED!) and Oblivion (also badly made, performance-wise, but not as bad as doom) I need some fast running games.