the crossfire scaling for the 68xx is really impressive. beats 5870 crossfire in most of the games reviewed here. makes me tempted to sell off my 5870 + top up for dual 6870

as the benchies for the 5xxx series in the review were measured using previous catalyst version, is it really the scaling improvement on the 6xxx series, or improvements in catalyst 10.10?

they've did it with 8800 GTS (512Mb) -> 9800 GTX -> GTS 250. 1 chip that renamed and used for 3 generations.
what makes you think nvidia wont do it again?

there are a few software out there that can use; msi afterburner, evga precision; rivatuner.
or, u can even use the catalyst control panel.

yea, around there. not like 50%. no doubt it's 25%-30% faster, the power consumption is also 25%-30% more compared to HD5870.

HD5870 188w
GTX480 250w
GTX580 244w