badly.. the 2900 is the only ATI DX10 card yet, like for Nvidia demo tech, certainly there's a verification of the driver or the code of the gpu at launch, so the card installed.. so impossible to make work the demo on other card. ( perhaps with some tweaks.. but i don't think..)
There's a demonstration of Tesselation, a feature ATI have developp, the little think i don't know is if it's use in the demo, or just for the interactive part..
Anyway it's run perfect with all maxxed in CCC, and the quality... ouch really nice, hope can see some games with this type of graphism soon...