A quick video I made to show the performance benefit of running NASCAR Racing on a P166 vs a P3 1050mhz (100x10.5)

http://www.youtube.com/watch?v=Q2_6O01oC2E

p3 seems slower? 😮

keropi wrote:

p3 seems slower? 😮

Yes, it is quite astonishing!

Great work on the interview! 😁

will the same happen with a p166 mmx?? or is socket 7 a bit more compatible than p3?

vetz wrote:

I just installed and tested the NV1 (3240) on a P120 with 32MB of RAM. I was shocked to see NASCAR Racing running alot better, it's is comparable with the Matrox version and certainly better than software mode!

Can anyone theorize what the hell is going on? On our Pentium III systems we have significant worse performance than on a P120..

It has been quite a while, but I only thought of this now: Could this have something to do with missing write combining (MTRR setup)? Pentium I usually have better video write speed than PII/III without write combining, I don't know if this is compensated by the higher clock rate of your PIII.
Usually in Windows the video drivers set up the registers, but the NV1 was introduced before Pentium II (PPro was released at about the same time but surely wasn't bought a lot by gamers) so it is quite possible that the driver doesn't include this.

Maybe you could try to see which memory ranges are used by the NV1 and enable WC for one or more of those? Unfortunately I couldn't locate a tool to do this in Windows, maybe you are able to find one. Alternatively it might be possible to set up the MTRRs in DOS before starting Windows.

Annnnnd it's live.

NVidia NV1 SDK 1.50 has been uploaded:
http://www.vogonsdrivers.com/getfile.php?fileid=706

It includes a demo called 3DSHAPES.