Half-Life 2: Episode One
It is only in the resolution of 1920x1200 pixels that the GeForce 7900 GS is really slower than the Radeon X1950 Pro, but it enjoys a 35% advantage over the Radeon X1800 GTO and GeForce 7600 GT in this case. However, this resolution is unavailable for practical purposes. 1600x1200 is the limit.
The GeForce 7900 GS does well again, but it must be due to the good OpenGL driver and the game’s using OpenGL and UltraShadow technology that this card manages to match the Radeon X1950 Pro. There’s no talking about using full-screen antialiasing on mainstream cards in this game.