You might find Gary's "Primary Image" link interesting. I'll paste a snip to peak your interest...
Who would have ever amagine 8 X AA on a voodoo1 back in 1997..
Primary Image rolled out Piranha in October 1997. This was a PCI board that had the following on it: - an embedded Mips R5000 200MHz processor that ran an embedded version of Glide driven by the client side part of the Tempest scene manager, the server side ran on the PC. The client side did all the cull/draw calculations thus relieving the PC's CPU of this burden and allowing multiple cards to be placed in a single PC (see below) - a Voodoo 1 FBI with 3 TMU's (to my knowledge this and the Barracudas are the only 3Dfx implementations by anyone to have 3 TMU's). This allowed for a tri-linear filtered base texture and a dithered trilinear filtered secondary texture, or even three dithered tri-linear textures in a single pass. - A daughter card with another Voodoo 1 FBI with another 3 TMU's.
This was used in SLI mode with the set on the base card. The cards had a pixel bus connector system that allowed 2, 4 or 8 of them to be joined together and composited into a single channel to generate 2x, 4x or 8x rotated grid anti-aliasing.
There were also tiling options so that half the cards could generate the left side of the screen and the other half the right side thus doubling the pixel fill rate and increasing the maximum resolution to 1280x1024. A second connector system was used to daisy chain the Pixel Clock, VSync and HSync signals, thus allowing multiple channels to be video synchronized. Industrial PC's were used which had up to 20 PCI slots in a 19 inch 6U rack mount chassis. The PC was a single board computer (SBC) that plugged into the end slot. This system was developed almost 2 years before Quantum3D debuted their 3Dfx based AA offering.
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