FarCry 2 DX9 vs. DX10 Performance
 

FarCry 2 is the first game we have evaluated that shows DX10 in Windows Vista to provide greater performance than DX9. Finally, DX10 makes a performance difference, and finally it is for the positive. We examine that A2A along with AA performance and multi-core CPU testing.

http://enthusiast.hardocp.com/articl...50aHVzaWFzdA==

wonder if low-mid-range cards also display DX10>DX9 results

lets hope for Vista SE in 2009 then

early performance benches between Vista and Windows 7 for DX has W7 in the lead by a small margin

With Geforce 9800GTX+ and C2D @ 3.5Ghz , Vista SP1 64-bit:
1600x1200 VHQ 8xAF with/without 4xAA


as you can see, DX10 mode is faster with midrange cards also!