I had the Supermac Thunder II in my 8100 and it wasn't as fast as the PDS video card. I think it's because Nubus is so much slower then the PDS. The Thunder II left window artifacts all over the screen if I moved them too fast. Did you get the PDS adapter for your sonnet card? It will allow you to mount the PDS video card upside down in your 8100. The AV card only supports 2 meg of vram but the non-AV supports 4 meg and that's plenty for most monitors even with millions of colors. If A/V isn't that important to you I'd go for more VRAM.

Opps: I mean HPV card instead of PDS..