I collect vintage electronics, mostly computers and gaming consoles. The Voodoo cards are considered quite collectable because of their GLIDE API. There is a decent stack of games that will ONLY run on Voodoo cards, or will only support Voodoo natively, which matters to a lot of collectors. Back then, a good eye could sometimes identify a card just by looking at the game. For one, for a brief period, games were only made to run on specific cards, so you could narrow it down just by what game is playing. Also, the artifacts would give them each a different look. Some were grainy, washed out, etc. The Voodoo 1 cards would stand out by the artifact that I can only describe as what looked like faint artificial scan lines.

They are really special cards, and two of my vintage computers were built around a Voodoo 1 and Voodoo 2, meaning, I started with the cards, and knew I had to build a PC to run them optimally.