Half-Life 2: Episode One
The Source game engine uses an integer data format for its high-dynamic-range rendering, which allows all of the cards here to combine HDR rendering with 4X antialiasing.

The Radeon cards tend to perform relatively well in this game, but that's not enough to push the Radeon X1800 GTO into close contention against the GeForce 7900 GS. In SLI mode, a pair of 7900 GS cards is nearly as fast as a Radeon X1900 XTX.