Long story short, after being told four times from EVGA that I could run crossfire on my board, I purchased the cards and couldn't get crossfire to work, at which time, EVGA told me crossfire doesn't work on my board. After a week of constantly e-mailing tech support, a manager finally called me...to tell me crossfire doesn't work on my board. They simply left me hanging with two amd gpu's...$600...and no way to use them after the specifically, repeatedly told they would work for sure. EVGA will not be getting my money in the future. Paid to RMA both heavy graphics cards back to newegg.com (who saved my computing life!) and ordered two new nvidia gpu's from MSI.