Half-Life 2: Episode Two
We used a custom-recorded timedemo for this game, as well. We tested with most of Episode Two's in-game image quality options turned up, including HDR lighting. Reflections were set to "reflect world," and motion blur was disabled.

The basic groupings we saw in Call of Duty 4 are also apparent here, but frame rates are higher overall. Despite having half the memory bandwidth, the Radeon HD 4670 matches the 3850 once again. And in Episode Two, in my experience, both the 4670 and the GeForce 9600 GSO are more than up to the task of delivering smooth gameplay at 1680x1050 with 4X AA and 16X aniso. In fact, they're both pretty good at 1920x1200, as well.