I'm building a Super Socket 7 retro gaming PC at the moment, and in the process I did some benchmarking with really interesting results.

I'm currently using the following parts:

- AMD K6-III+ 400MHz overclocked to 500MHz
- Gigabyte GA-5AX rev 4.1 motherboard with the latest BIOS
- 3 x 128MB PC133 SDRAM
- 32GB IDE SSD

I tried the following graphics cards with this PC:

- ELSA Gladiac 511 (GeForce 2MX PCI)
- ATI Radeon VE AGP

This is the results I got when using Phil's DOS benchmark pack:

Quake demo1 640x480 (Write Combine disabled)
Radeon VE: 17.0 fps
Geforce 2MX: 13.8 fps

Quake demo1 640x480 (Write Combine enabled)
Radeon VE: 27.0 fps
Geforce 2MX: 19.5 fps

Doom demo3 max detail:
Radeon VE: 434 realtics
Geforce 2MX: 717 realtics

Another interesting thing is that Chris' 3D Benchmark and PC Player Benchmark absolutely refuse to run on my GeForce 2MX in 640x480. On the Radeon VE, I got 76.9 fps in PCP Benchmark and 116.4 fps is Chris' 3D Benchmark in 640x480 (both with Write Combine enabled) which is way higher than Phil's results in this video: https://youtu.be/D_QTIadLd1w In fact, my results without Write Combine are about the same as his results with Write Combine.

So, the two questions I have are...

1) Is this difference between the Radeon and the GeForce normal? If yes, is it because the Radeon is AGP and the GeForce is PCI?

2) Why can't I run PCP and Chris' 3D Bench in 640x480 on the GeForce? Quake runs fine in the same resolution.