ATI wins some, Nvidia wins some....no two cards (based at the same level) will perform the same in games, and drivers are the same.....some are great, some not so...from both campss!! As others have said, the 6200 demands different things from your system than the 2400 does, and to be fair, other than for video playback, the 2400 is a bit of a sucker. What psu are you running?? Are your Guru specs correct??