And here are the benchmarks. I've also included software rendering, just to showcase how much of a difference a Voodoo1 can make on a system such as this. FYI, I'm using Win95 OSR 2.1 + DirectX 7.0a paired with the latest 3DFX reference driver v3.01.00 and also MiniGL v1.49 for the Quake games.
As you can see, the Voodoo1 performance in Quake 2 (1997) and Unreal (1998) is a bit lackluster. But if you consider the fact that those games are literal slideshows on this system when software rendering is used, the Voodoo does seem like magic. I have also tested a few more games using Fraps 1.20 to measure the frame rate where applicable, but they don't seem to have dedicated benchmarks, so I've decided to post a short performance summary for each of them.
Descent 2 (1996)
With the official Voodoo patch applied, Descent 2 runs very nicely on this card. I get 60+ FPS most of the time, with some dips here and there, usually when a large number of enemies are on the screen. Overall, the game feels very responsive and plays superbly.
Tomb Raider 1&2 (1996 & 1997)
Both of these games run great on the Voodoo1. Performance rarely falls below 30 FPS (which is the in-game maximum) and when it does drop, it goes to the mid 20s at most. For reference, these games run at roughly 10-12 FPS in 640x480 when software rendering is used on this system.
Final Fantasy VII (1998)
This game runs very smoothly, with some minor dips while flying around the world map. Most importantly, all mini-games (e.g. G-Bike) run at the correct speeds on this system and can be completed without any problems. On my Celeron + Voodoo3 rig, those mini-games were borderline unplayable as they ran so fast that it was impossible to properly control the character.
Thief: The Dark Project (1998)
This game doesn't run too well on this system. Some of the stutter is likely caused by the slow CPU, but the framerate is still too low at 640x480. When I drop the resolution down to 512x384 the situation improves a bit, with FPS going into the 20s. Not smooth by any means, but technically still playable.
In conclusion, the Voodoo1 is fantastic for DOS Glide games. It also runs early Windows 3D accelerated titles quite well. However, I wouldn't recommend using it in demanding games made from 1998 onward, as it likely won't be able to deliver enough performance. All in all, it's great to have this piece of history in one of my rigs. The original Voodoo kickstarted the 3D revolution, and using it to play games that came out during its glory days feels very satisfying.