I was just browsing the KnifeEdge site and saw a post where some of the guys are comparing screen rates. Some of these guys have dual cores and all have 3D video cards with plenty of memory no one is getting decent Frames per Second "FPS" - screen rates. Everyone sets the screen and graphic settings to the highest possible and loads the same plane - (in this case a heli) and the same flying field as well as the same position on the flying field ... for comparison. So far the sampling is : 8 FPS, 11.5 FPS, 12.1 FPS, 5.5 FPS, 21.6 FPS, 12.1 FPS and 5.3 FPS. I'm guessing that you'd have to reduce the graphics considerably to get screen rates capable of flying with. Kind of defeats the purpose of upgrading ... <?>