resolutions to xpect

i am going to buy a dell xps 1730 with the followng specs
core 2 duo 2.6 ghz
4 gb ram ddr2 800 mhz
2 geforce 8800 gtx in sli 1gb
at what resolution can expect these games to play reasonably well the lappy has a max resolution of 1920*1200

Crysis , devil May Cry 4 , Gears of war , Hellgate London , Mass Effect