I used on board for a while. I had the money to upgrade the mb but not the gpu. Then I went and got a nice shiny GF7800. What I find funny is when gamers go buy these beasts with 3 ATI1900X chained together with a 2000W PSU then say "hah! I get 1000fps, mine is bigger than yours!" and I just point out "your monitor only updates 80 times a second. 920 of those fps you paid so much for in hardware and power aren't leaving the buffer."
</off topic ramble>