The results sound reasonable? What were you expecting out of it? It is a plain Rage Pro after all.
I think it is reasonable that the card would perform better and score higher in 3DMark 99 on a Pentium II system (the frequency and chipset of which you have not stated). Even a Pentium II 300 will probably be faster for 3D games than a K6-III 400 with 66MHz FSB.

Is there a specific reason you care about 3DMark 99? Are you perhaps trying to run a specific game that will not run very well?

Of course I didn't have too high expectations also on this platform, just taking 3DMark99 as a Direct3D 3DNow! optimized (also) known benchmark to see how it compared with the Riva128 PCI that perform more than 3 times the score (on the same system) make me asking why such difference. If the Pentium II 350/440BX was as I was thinking at first the main boost for the AGP version I tested before, I was expecting at least to see a bit of jump from a 233Mhz P-MMX to the K6-3@400Mhz and instead I think the only value changed is the CPU Marks but frame rate remained mostly the same. Instead the Riva128 PCI reach what I was expecting from this platform at these frequencies and it's a solid score. Just wondering if the PCI Rage Pro chip has more speed problems than the AGP one where usually I would not expect much difference. To say that I'd not be surprised to see the PCI version having same results even on a Pentium III and the 440BX. 😉

With weak CPUs you probably want to avoid the latest drivers.

Putas wrote on 2022-03-07, 18:55:

With weak CPUs you probably want to avoid the latest drivers.

Thanks. I was also beginning to think maybe latest drivers are a bit heavy even if they come with a very good OpenGL driver (compared to the previous ones).

3DMark99 with 3Dnow scored with AMD K6-2+ 400MHz and RageXL AGP 8MB - 1361 points - default settings and without overclock, i try to push more out of it without any oc. Rage3 AGP cards are little faster than PCI. With 8MB they are also little faster than with 4MB. I am using Macxw4 5.38.x modified drivers with 4.11.4033 direct3d. Other driver components also matter, not just ATi Rage drivers, i use 4.11.2612 Macxw4.vxd and Atihal64.dll versions make also small differences in 3D scores. For Rage Pro i would use up to 5.40.x drivers, thats where the 3dcif support ends.

edit: RageXL is basically Rage Pro
Usually i score with that K6-2+RageXL machine from 1380 up to 1411 points if i overclock cpu from 400 to 500MHz. I think it is possible to get 20 more points without any overlock for that system, my next goal is 1400 points with Rage3. Still i have 1707 points score also for that ATi Rage XL. 😀