Judging by the pictures it's a VERY early model! But a good piece to have in the collection!
Is the 3dfx logo only on the box packaging?
I couldn't see it on the manual or the driver CD. Is there any 3dfx reference on the driver CD (documentation, files, demos, drivers)?
Also, judging by the PCB layout, it's ALL STB!
That method of circuit line laying has no relation to 3dfx's methods and it does relate to other STB models in terms of looks.
Maybe that's why it looks very different from the VoodooTV FM. Maybe 3dfx made alterations to this model for their 3dfx lineup? ???
Makes me think STB had this already in the bag before the 3dfx takeover, and this would have been released as a PURE STB model. Food for thought.