Quite right Retro!
I must be getting old and ignored what computer THX1138 was using in the early part of my reply- d'oh!
I used to use the Cybervision 64 on an A3000, which of course has Z3 slots. It was really the only thing that made using a desktop A3000 worthwhile and no doubt it was Z3 that made the card so fast in its day. Now I'm feeling nostalgic........anyone got an A3000T they want to sell me?!!