text: whats better (2) geforce 6800's connected via sli or (1) geforce 7800gtx?   in general the 7800gtx is better. it will usually perform favorably when compared to a 6800 sli setup and uses much much less power. for detailed comparison, see http://www.tomshardware.com/2005/12/02/vga_charts_viii/page5.html