I was just shown a link to a site with all kinds of 3dfx information.

I use to want a 3dfx card back when they were new. I wasn’t able to afford one until the Voodoo Banshee came out.

This site has pictures of many of the 3dfx based video cards, from the original stuff up until the point that 3dfx died.
http://www.thedodgegarage.com/3dfx/