one of my friends sitting here next to me asked this earlier and the real answer is here somewhere im sure ..but cant find it. he asks ... can 2 different vendors of video cards ... say bfg and asus 8800gtx or 8800gts or even 7950 ect ect be paired together in sli? both different brands but the same letters/model numbers that is. i realize that all the cards come from one or 2 manufacturing plants and everyone then stamps their name on them from there ..similar to chevy/gmc/cadillac or ford/lincoln/mercury, but i sure as heck dont know the real answer. ive always purchased 2 identical cards (same manufacturer/same model number) at the same time and have always recommended doing so to others.