its been supporting SLi for a while
the patches instantly put in the command line to support multi gpu..
i think it was r_multigpu 1 or something like that
because this definitely runs better than my 8800gtx did with crysis..
and its already been shown quad sli is the only solution to run crysis in dx10 1920x1200 very high and not lag
and 1920x1080 on my ultra quality settings i have for dx9 i don't think i ever drop below 19fps (in heated battles, which is very good for crysis)
with my cpu at 3.37 and gx2 clocked at 700/1660/2050 i run the game very smoothly; at times hitting 45fps.. i'd say i'm averaging 25-30 fps most of the time with my settings.. i am more than happy with the performance i'm now getting.. though quad sli would be nice because i would probably never drop below 25