Doom 3 - Heat Haze
This next demo was recorded in order to test a specific effect in Doom 3: that cool-looking "heat haze" effect that you see whenever a demon hurls a fireball at you. We figured this effect would be fairly shader intensive, so we wanted to test it separately from the rest of the game.

The X800 largely runs neck and neck with the 6600 GT here, at least once antialiasing is enabled. The 12-pipe GeForce 6800 generally retains a slight edge over the X800.