CrossFireX reviewed: it’s a start
Quick note to the graphics enthusiasts in the house, HardOCP took a long look at CrossFireX using dual Radeon HD 3870 X2s. As you might expect, some games benefit from the raw power, some games require driver tweaks and knob-fiddling to get going right, and some games were just about the same without (read: your mileage my vary — for now). Check out their full review for the details.
source:engadget