There's tons. ATi has the Rage-series (both PCI and AGP). Rage 128 Pro is probably on the faster end of all that. Anything with S3 plastered on it is period correct, if not always completely desirable. Matrox has the Mystique and Millennium series with the G200 likely being the top of what you'd see in a Pentium II-system. The G400 is also good on the higher end, and went up against the TNT and TNT2-based cards from nVidia. All of those are also excellent alternatives to a 3Dfx-card. Matrox tended to have the best analog signal quality, but unless you're using a big CRT with a resolution above 1024x768, you probably wouldn't notice it. TNT2/G400/V3 are roughly comparable in performance for 3D-gaming, each with their own particular strengths and quirks, shall we say.