so my buddy has http://www.legitreviews.com/article/513/1/
board and is wondering how hard it would be to crossfire 2 5870s on it with a pciex1 adapter to a pciex16 doing crossfire. is this even possible. i told him i hear of some people doing stuff like that. does it lower hashrates if even possible. what would you guys recommend. should he just buy a new board? also we are looking at boards that run 2 pciex16 slots one is running at x8 and one is running at x4 is that going to be an issue? please advise. much thanks
Running at x1 is fine for mining, but don't xfire them, it lowers your hashing speed.