It depends on your Cpu of course. But if you have a recent Sandy or Ivy Brige model, there will be a significant increase in performance.
-> I can run all games, including Zelda SS and Xenoblade at nearly fullspeed and 3x internal resolution with an ICC build only. The difference if often at 5 frames/second, 20 non ICC vs 25 ICC FPS PAL, which is a 25% increase on my system.
-> I can run all games, including Zelda SS and Xenoblade at nearly fullspeed and 3x internal resolution with an ICC build only. The difference if often at 5 frames/second, 20 non ICC vs 25 ICC FPS PAL, which is a 25% increase on my system.