I get very close framerates in linux to what I get in widoze, and some people even have better framerates in linux then windoze.
I ran my computer under windoze for 2 days straight the other day. I listed to music, surfed, and played some games. I whent to reboot it (because my framerates were dropping) and I got a bluescreen after hitting "shutdown" lol. It can even turn off right.
Ive put the same load on linux for much longer periods of time and it says as ready as it was when i first booted up.