HardOCP decided to take a look at what DirectX 10 can do for Call of Juarez. They take a look at the image quality improvements and measure the performance impact.
We are on a mission to get to the bottom of DirectX 10 performance and image quality in games that support the new API. We want to simply know what the gameplay advantages are in games and if it is worth it to upgrade to Windows Vista in order to utilize DirectX 10 in the games that offer it. We started on our DX10 journey with Lost Planet. In that evaluation we found that there were no major visual differences between DX9 and DX10. The one difference that DX10 allowed, high quality soft shadows, took such a hit in performance only the highest-end video cards could muster it. Even then the image quality improvement just wasn’t worth it. Ultimately we decided for that game it was actually best to run in DX9 mode for the best gameplay experience.