Today’s high-end graphics cards are so incredibly fast that they have roughly the same speed in Half-Life 2 , being limited by the performance of the system’s central processor. The previous-generation solutions like GeForce 6800 Ultra and RADEON X850 XT Platinum Edition make an exception since they can’t keep pace with the new-gen graphics cards in high resolutions of the “eye candy” mode. They can maintain a frame rate of 70-80fps, however, which is more than enough for comfortable play.
It’s all generally the same in the d3_c17_02 demo which contains a battle scene. The cards are overall slower than in the previous case, but even the GeForce 6800 Ultra makes the resolution 1600x1200 with enabled FSAA and aniso-filtering playable with comfort. The ASUS Extreme N7800GTX TOP is no worse than the RADEON X1800 XT, not to mention the less powerful solutions from ATI, even in the hardest mode.