Performance in Strategies
Command & Conquer 3: Tiberium Wars
This game having a frame rate limiter, you should compare the minimum frame rates in the first place because it is the minimum speed that determines your playing comfort in Command & Conquer 3.
The minimum and average speed of the ASUS EAH2600PRO is too low for playing the game normally. You can hardly achieve an acceptable speed even by disabling FSAA.
The ASUS card cannot give you a comfortable speed even at 1280x1024, but its elder brother and the Nvidia GeForce 8600 GT do not do that, either. The GeForce 8600 GTS allows playing with minimum comfort, and the ATI Radeon X1950 Pro is the only card to deliver a really good speed.