i dont think they would sell an x2 as "buy one, get one 60% off". AMD has said themselves get up to 1.8x the performance with crossfire, so they will probably charge 1.8x as much for a duel. so if its $550 for a x2, the 5870 would be spot on at $300. or the x2 will be delayed long enough for the 5870 prices to come down to 300ish