nt many games support crossfire yet and the 2nd GPU will nt b used if the game does nt support crossfire/the drivers are nt up to date,check guru3d.com 3870x2 is nt compatible with world in conflict.ATI need 2 improve their drivers.88GT SLI beats the crap outa 3870x2 even in crysis.

ur rite,faster bus and faster ram needs to be used to fully optimise the dual gpu configuration,meaning the 3870x2 power nt full unleashed if use phenom platform with hypertransport3 .But they should just make 2 cores on the gpu instead of making 2 gpu on 1 card just what 3dfx did b4 with their voodoo 5 up to 4 GPU on 1 card crazy!!!!!!,resulting more heat and power consumption.The power consumption of 3870x2 almost same as 2900XT bro its super duper power hungry card and if u c in the benchmark at lower resolution 3870x2 going through cpu bottleneck,showing that the bus speed is nt enough.