Dan, my system is 2.6Gb-512Mb with Geforce 4- 64Mb I have everything maxed and locked at 32 Fps. With super graphics such as London Stansted or flying in the Canadian Rockies, my fps goes down to 24 - 26. Now, having said that, last week I experienced a low frame rate of 4 Fps, and panicked, until I reallised that I was running 2 simultaneous games, how, I don't know.