Hmmm... I dont know of any problems, but I have heard that ATI drivers are not as good as nVidia. The Radeon is the fasted card although when the nVidia FX hits the market it should give the Ati a run for the money- but this is partly due to the higher clock speed which would suggest that the Ati is infact a better card.
The gforce 4 is tried a tried and tested card and to my eyes runs the games well (I have a ti4200). If your an avid gamer you may notice the difference, I cant.
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