I recently got a second HD 7870 (both XFX DD editions) and wasted my warranty getting the card fixed (XFX sent me a new BIOS). Now I have 2 shiny working cards ready to crossfire and after spending days trying to get them to work together I read a post that makes me shudder, Pitcairn and Tahiti chipsets aren't compatible for crossfire.
I feel pretty ripped off, now I have to buy ANOTHER card just to get them to work together and maybe sell the oldest one. I can't stream or render without some kick and this was supposed to be my first powerhouse PC. Is there anyway to get the cards to crossfire or is it just false advertising that 2 cards of the same series work together?