I think it's time for nvidea to actually relaese something that's good. Nvidea cards are terrible. This beta driver is not good at all even though it's beta. AMD makes much better video cards and always have. AMD video cards are great for dos games. Nvidea has the better graphics but AMD has better backwards compatibility.
Actually it's the other way round for the most part.
Nvidia performs better, ATI has better quality graphics
Nvida has much better DOS support, ATI have moved on from VESA altogether.
Nvidia have often made much better graphics chipsets than ATI while ATI have often released 'also rans' which offer ostensibly the same 3D/video playback features, but with less stability, less extensibility (such as the fact that no ATI card can do 3D acceleration across dual displays in wide or high dual panned desktop mode, nV cards have had it since the Geforce 4 ti) and at greater expense. The only time some of that wasn't true was when nV released the Geforce FX series, which was marred by less than stellar PS2.0 support (all FX cards run PS2.0 effects in half precision by design as they had 16bit register space). At that time the ATI 9600 and 9800 chips were the best PS2.0 performers and most DirectX9b games were writen with them in mind. Still, even then I chose an nV FX 5900XT over an ATI 9800 purely because I was running dual monitors at the time and ATI just couldn't do 3D acceleration across both.