Aliens vs. Predator Gameplay Performance and IQ
 

When DirectX 10 came into our gaming lives, it brought with it terrible performance hits and negligible image quality changes. We are glad to see that DirectX 11 brought improved performance not only over DirectX 10, but even over DirectX 9. Graphically speaking, we were hoping that there would be more to see, but we were disappointed.

http://www.hardocp.com/article/2010/...performance_iq