As long as you stay with the same resolution fullscreen is faster than windowed mode . Personally i was fine with the 800x600 resolution, I wouldn't have needed a change here. I just hope that it still will be playable on my Mini which means 1.25GHZ G4 and a 32MB ATI 9200. If you would have altered the GUI slightly then an increase in resolution wouldn't have been needed at all. Anyway as long as you stay away from things like AA and Pixellights it still should be handable, otherwise, at least for cards in this range, there is a magic border between 800x600 and 1024x768 were framerates drop significantly.