as the title states, which is the better option? Will crossfiring the two 5870s (and losing 1gb of VRAM from the 2GB version) be better (performance wise) then having just the 2gb version?
yes the peformance of two 5870s surpass 1 5870 2 gig edition, in most games today it will do great, games coming out soon are gonna need more than 1 gig of graphic card, so its up to u, why not just buy another 2 gig 5870,