3D Game Man posted a comparison review between the HIS HD 3870 X2 and BFG 8800 GTX video cards
>> HIS HD 3870 X2 vs. BFG 8800 GTX
The main purpose of this review is to see how each product performs in the game Crysis. The BFG 8800 GTX Video Card has a slight advantage in all Crysis tests. This is no real surprise considering the drivers for the 3870 X2 are immature and not yet tweaked for Crysis. With more mature drivers for the 3870 X2 I suspect it would pull into the lead, but I'm just guessing. Also consider that Crysis has its issues and is coded to work best with NVIDIA video cards. For fun I ran a few 3DMark tests and it's very clear who the winner is. The 3870 X2 is much faster than.
>> HIS HD 3870 X2 vs. BFG 8800 GTX