Youtube videos? really?
Get 10.5, apparently it fixed the bug with crossfire and eyefinity.
That youtube video is MY video of the single 2gb 5870 and the performance I'm getting out of it.
There is not issue with crossfire and eyefinity I have been running crossfire cards and eyefinity for MONTHS started with 5850s and then 5870s. This thread is about mixing a 2gb 5870 with a 1gb 5870. There is no issue when the cards are the same. When they are different that is when it FAILS.