What's a good, optimized first person shooter?

i have a 8400m gt, 2gb of ram 667 (5300) ddr2, 160gb toshiba hdd, 17 inch screen 1440x900 max size, and intel core centrino duo 1.8x2...so what would be a great shooter thant i can run at 1440x900 and or 1280x800 and high settings. i have css and orange box im slightly bored of it. What else is there? O i also want there to be lots of people in servers.

p.s. cross out bf2, bf2142, moha, vegas 1 i have im thinking about vegas 2 though i heard it was more optimized and less graphics to run it?

Chronicles of Riddick: Escape from Butcher Bay is from the 2004 era and was fairly overlooked, but is a phenomenal shooter. Doom 3 is well optimized, but it's not for everyone (about a 60/40 split of those that enjoyed/hated the game). I'm playing through Quake 4 and it's another 2004-era engine so it's very efficient. Prey was supposedly pretty good as well.

Oh, I just realized you want multiplayer. Quake 4 is a good choice there. I don't play much MP aside from CSS and DoDS thesedays.

Warpath. hahahaha. Chronicles of Riddick: Escape from Butcher Bay is an excellent game.

Chronicles of Riddick: Escape from Butcher Bay is from the 2004 era and was fairly overlooked, but is a phenomenal shooter. Doom 3 is well optimized, but it's not for everyone (about a 60/40 split of those that enjoyed/hated the game). I'm playing through Quake 4 and it's another 2004-era engine so it's very efficient. Prey was supposedly pretty good as well.

Oh, I just realized you want multiplayer. Quake 4 is a good choice there. I don't play much MP aside from CSS and DoDS thesedays.

YourOldFriend

Yeah get Chronicles of Riddick-Seriously great game.

Call of Duty 4 is the best multiplayer game out right now and scales down extremely well to weaker systems. I played it very smoothly on my laptop of similar specs (2.16 centrino duo with a 256mb FireGL 5200).