ATI HD4870 & HD4850 Crossfire Performance Review

Up until this point we have somewhat shunned full-on dual card reviews but with the current popularity of Crossfire and ATI's current crop of sub-$300 graphics cards, it is high time we tackled this subject. In this performance review we will be taking a look at Crossfire configurations with HD4870 cards from Palit, HD4850 cards from Sapphire and a few little interesting twists (Mixed Crossfire) and turns (Crossfire by combining 4800-series and 3800-series cards) along the way.