I purchased a Gateway 2000 486DX/33V with the STB PowerGraph C33 card video card. The retro web list a jumper manual for it here https://theretroweb.com/expansioncards/s/stb- … -powergraph-c33. But it again mentions undocumented jumpers in the JP2/1-3positions. An article here https://dependency-injection.com/vlb-vga-group-test/ states that undocumented jumpers near the VGA connector change the card to a zero was state and makes a big increase in performance changing it to one of the top performers essentially but doesn't tell which jumper it is or the setting for it. Someone asked in I think 2022 in the comments on the page which jumper setting was changed and never got a reply.

Is anyone familiar with this card that can help to determine which jumper it is? With the costs of VLB cards I'd like to think I have a winner on my hands for gaming once I can change it to a 0 wait state!