bf2 runs smoother now w/ 2gb. everything is @ high settings w/ 2x aa and the hd no longer goes bezerk when the game starts for me. before it took awhile of the hd chugging before things calmed down.
also when quitting out of games, the hd used to go bezerk restoring stuff from the pagefile. this no longer happens irregardless of how long i've been playing the game.
games also load a little bit faster now as well. can't go wrong w/ 2 gb