There is now rather nice article abot Vista and DX10 at Anandtech:
http://www.anandtech.com/video/showdoc.aspx?i=3029
The fellows in Anandtech really are not so pleased in to the situation in DX10 hardware section...
http://www.anandtech.com/video/showdoc.aspx?i=3029
Both NVIDIA and AMD were very upset over how little we thought of their DX10 class mainstream hardware. They both argued that graphics cards are no longer just about 3D, and additional video decode hardware and DX10 support add a lot of value above the previous generation. We certainly don't see it this way. Yes, we can't expect last years high-end performance to trickle down to the low-end segment, but we should at least demand that this generation's $150 part will always outperform last generation's.
This is especially important in a generation that defines the baseline of support for a new API. The 2400 and 8400 cards will always be the lowest common denominator in DX10 hardware. Going forward, developers will have to take that into account, and we won't be able to see key features of games require more horsepower than these cards provide for the next couple of years.
In short, we really need to see faster hardware before developers can start doing more impressive things with DirectX 10.
The fellows in Anandtech really are not so pleased in to the situation in DX10 hardware section...