Not quite sure on the CPU equivalent. Faster than a Pentium II 450, but slower than a Pentium III 1GHz. I haven't OC'd the VIA yet. For the PCI adapter, it is a generic 1 PCI --> 2 PCI riser with arbitration and clock sync. Since the Voodoo 2's hardly use much of the PCI bus in terms of bandwidth and power, it's plenty sufficient. Even though I haven't tested with 2 cards yet, I know someone who has, and it works out great. Hopefully my 2nd card gets here in the next few days, and I'll be able to compare benchmarks with 1 card versus 2, and also try some overclocking. So far just a basic run of 3Dmark2000 in 800x600 produced a score of around 1700. I haven't tweaked any settings, overclocking, or drivers yet. I tried 3DMark99 Max, but it doesn't detect the VIA processor correctly, and scores like 20 marks, reporting 1-2fps, despite it running at 60fps+.
PCI Riser: https://www.newegg.com/Product/Product.aspx?I … =9SIAEGB69T5993
DOS Sound Blaster compatibility seems to work with the popular games I installed so far, like Doom, Doom II, Duke3D, Wolfenstein 3D, etc. I'm sure there will be some limitations or games that don't work right though.
I also picked up another motherboard from Phil's Computer Lab recommendations -- the MSI MS-7199. I haven't tested that board yet, but it also looks promising from his video.