The guys at the [H] run the top cards from both camps through a series of benchmarks in both the DX9 & DX10 modes of Call of Juarez & dish out the max playable settings at the end. The 2900XT actually does quite well thoughout...

"Call of Juarez, in DX10 mode, places the gamer into some of the most immersive outdoor environments we have seen; even rivaling and sometimes surpassing Oblivion. The HDR, lighting, and high resolution textures in DX10 are what sets this game apart."