'Do you know what youtube is?
Yeah, dont go on performance video's from Youtube. There's always some catch like its very low resolution, theres no FRAPS counter so you dont even know the FPS as they play, theres no guarantee the footage was even made on the rig they claim to be running off, they often never tell the settings the game is running at.
EDIT: I'v seen some ridiculous claims on Youtube videos. Something along the lines of an FX-4100, 550ti and 4GB at 1333Mhz getting 60+ FPS on ultra in BF3. Utter trite.
Also running a game in 800x600 and getting 30FPS, medium settings. You would be better of with an Xbox or Playstation at that point.