3Dfx Voodoo3 PCI
This card has all the bits to become a working card except for the 3dfx 'Avenger' chip itself. It was either a card that was never finished or perhaps once it was fitted with a Nepente socket. The socket can be used to insert 3dfx chips and has a lifetime of around 100 insertions. This saves time on debugging because a chip is swapped in a matter of seconds.
The card has copper interconnects to ensure good contact with the socket. It also has four holes around the chip-area in which the socket is installed. Normal 3dfx cards only have two holes.