Quake 4
In order to make sure we pushed the video cards as hard as possible, we enabled Quake 4's multiprocessor support before testing. We used the game's "playnettimedemo" to play back our gaming session with the game engine's physics and game logic active.

If the 320MB GTS is going to run into a memory size limitation at higher resolutions and quality levels, it's not apparent in Quake 4. Even at 2560x1600 with 8X aniso and 4X antialiasing, the GTS 320MB cards pretty much keep pace with their 640MB sibling. In fact, the XFX XXX edition is second only to the GeForce 8800 GTX here, outpacing the Radeon X1950 XTX and GeForce 7900 GTX.