BGE performance on other systems and specs

hey guys

i have seen wird behavior of the game engine on another computers… i have tested my game on ubuntu 10.04 with cpu 4core 2.8 ghz 4 gb ram and nvidia 220 it runs about 60 fps… on the same spec on windows 7 runs 60 fps but on the same computer with win 7 and the nvidia geforce gt 240 it runs on 12-25 fps. on winx xp 1 gb ram 2.8 ghz cpu about 15 fps and on vista its only about 12 fps :confused: so i cant understand it… does anybody seen anythink like this before?!

I would check your drivers. Make sure you have the right version installed for the right platform.