The machine that houses my Voodoo Original card is a P-MMX 233, with the full 256k of L2 and 64mb of ram. It's also equipped with a Creative Labs SB16 (ISA), a 10-base NE2000 network card (ISA), a Matrox Millenium 2064W card for 2d (PCI), and a 4gb Quantum Fireball IDE drive and Creative 24x CD player.
What you're forgetting is that, back in THESE days, 30fps was the top of the line for most things. I think you're confusing this machine and this hardware with something that might halfway emulate what we have today -- and you would be mistaken.
Unreal (I didn't say unreal tournament) plays at around 20-35fps on this rig depending on what's going on. For the timeframe in which Unreal was released, this is acceptable and actually pretty good.
Maybe if I had a V2 or something, the framerates would be higher. But still, Unreal and UnrealTournament are both very CPU dependant, EVEN on today's machines. There just isn't enough CPU in a PMMX chip to delve out the frames you're expecting...