No, I'm saying DX10 is meant to render more simultaneous action on screen without a drastic performance decrease meaning you won't take as much of a hit when compared to running it in DX9.
The only reasons XP and DX9 are better performing is because of the sloppy Vista drivers by Nvidia and ATI which have been causing problems.
And note I'm also not comparing Vista Performance to XP or vice versa.
You have to admit Nvidia's or ATI's drivers haven't exactly been great although they have improved from when Vista has been first released they still have kinks that need to be worked out.
Also you have to consider Crysis and other games aren't true DX10 games and just DX9 games with a sloppily implemented DX10 mode.
Also the main point is that the performance decrease won't be as severe with DX10 as DX9 or OpenGL when ther is a lot of simultaneous action on screen at once.
Note I'm not comparing XP vs Vista performance so you can ditch the XP vs Vista performance argument. I'm discussing and comparing running the same game on Vista under DX9 and DX10 and comparing them.
Also I expect fairly soon that performance in Vista will squash performance under XP given I can run Vista on my dual core AMD processor, Geforce 6150LE and 1 gig of ram with virtually no degradation in perfomance game or os wise.
