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 X2 again takes it to the Ultra, proving itself the fastest single-card solution around. However, the GeForce 8800 GT in SLI runs away and hides here, and it's the only solution we tested capable of hitting 60 FPS at our peak resolution. If you're willing to run an Nvidia chipset and sacrifice an extra PCIe x16 slot—both big "ifs," especially the chipset thing—a couple of 8800 GTs in SLI can put the X2 to shame.