Half-Life 2: Episode Two
We used a custom-recorded timedemo for this game, as well. We tested Episode Two with the in-game image quality options cranked, with 4X AA and 16 anisotropic filtering. HDR lighting and motion blur were both enabled.
The 9600 GT's advantage over the Radeon HD 3850 and 3870 carries over to Episode Two. And two 9600 GTs in SLI can deliver playable frame rates at 2560x1600 with 4X AA and 16X aniso, believe it or not.