I can play Crysis at 1920x1200 4xAA on my i5 750 with HD5750 with acceptable results. CoD MW2 also runs very nicely at 1920x1200.
Yes,and i can do 1920x1200 with 16xAA & 16AF and ultra details with my pentium I @100 Mhz plus a voodoo I.
Seriously,unless you have sth like low or mid details there is no way you can do 19x12 +4AA.
@Op: At that details,crysis will get a major fps hit unless you crank down the details. I suggest you switch to 1680x900 or even lower and then decide whats the optimal resolution.