This is my RetroPc

What about the Matrox G400-500 series for pci?

Matrox G400 PCI doesn't exist. G450 PCI does exist and should work on any 430TX motherboard. At least I had no problems on few boards I have. Drivers are a bit too heavy for Pentium MMX or AMD K6 though.

How can I know if it's a Chinese card instead of original NVIDIA?

Some old brands like PixelView or BFG. They made FX PCI cards back when they were relevant and probably QA on old systems. GeForce 4 MX or Quadro FX counterpart in general. Those should work without problems.

"Comparing this machine to my other Socket 7, the gap in performance is pretty small. A Soyo SY5EMA, K6-2+ 550 @ 560 (5x112 MHz) 512 megs of PC133, and a Radeon 9200 AGP with 128 megs of memory. It actually gets a lower score in 3D Mark 2000 than the 128 meg 9250 SE PCI does in the Biostar board, and the 3D Mark 2001 score is only a few points higher (2,356 just now). With 768 megs of memory installed, it ran Windows XP a little better than the Biostar @ 500 and 256, but not much."

mb-8500ttd manual needed

Repo Man11 wrote on 2020-06-27, 22:18:

"Comparing this machine to my other Socket 7, the gap in performance is pretty small. A Soyo SY5EMA, K6-2+ 550 @ 560 (5x112 MHz) 512 megs of PC133, and a Radeon 9200 AGP with 128 megs of memory. It actually gets a lower score in 3D Mark 2000 than the 128 meg 9250 SE PCI does in the Biostar board, and the 3D Mark 2001 score is only a few points higher (2,356 just now). With 768 megs of memory installed, it ran Windows XP a little better than the Biostar @ 500 and 256, but not much."

mb-8500ttd manual needed

It's not that AGP necessarily affords better performance than PCI, especially on Super Socket 7 , it's that finding good AGP cards (with 3D acceleration support) at a reasonable price is easier because they were more common in AGP by 1999/2000 and later . PCI was getting relegated to niche/low-end status .

EDIT: Not to say the AGP does not have a big bandwidth advantage over PCI, it's just that by 1999/2000 video card demands on bandwidth were just starting to saturate the PCI bus. Consequently, AGP was not absolutely necessary yet, but manufacturers were jumping on it for their higher end offerings because they were likely to be used in a high performance system and those all had AGP anyway .

My geforce FX5500 is an Axel branded 128bit 256meg card.

So maybe thats the difference its not a chinese one?

dirkmirk wrote on 2020-06-27, 23:52:

My geforce FX5500 is an Axel branded 128bit 256meg card.

So maybe thats the difference its not a chinese one?

Do you have a photo of that card?