As we have reported a number of times, this game with its complex shaders is hard for any graphics card to digest. We test it using FRAPS.
The 16-pipelined RADEON X800 cards do the math1s associated with pixel shaders better than NVIDIA’s cards. Yet, the 12-pipelined X800 PRO doesn’t provide playability and runs Perimeter at the same speed as the GeForce 6800 GT – about 17-20fps.
The “eye candy” mode is unplayable at all. The RADEON X800 XT Platinum Edition and the X850 XT Platinum Edition were the only cards to yield 25fps, and that in 1024x768 resolution only. Overall, the ATI team looks preferable to NVIDIA’s cards in this game. For example, the RADEON X700 XT is much better than the GeForce 6600 GT.
Perimeter is among those games where NVIDIA’s SLI technology shows its best. It achieves the absolutely best results, especially in the “eye candy” mode. You can even play Perimeter comfortably in resolutions up to 1280x1024 on a SLI platform!