I am looking for a solution, either Windows or Linux, that lets me hook up eight or nine monitors to a single PC and view (ideally hardware-accelerated) video spanning all eight monitors. The monitors would likely be fairly low-resolution; think 640 x 480. Still, 5120 x 480 is still a lot of pixels, hence the need for hardware acceleration.
I am not up to date on the differences in AMD/ATI and nVidia drivers. I understand that both support multiple monitors, but I understand that in the past, it was difficult to view movies spanned across multiple monitors. I do not know if this is still the case.
I'm also not sure if the best solution is to hook up three or four video cards, or if perhaps I should look to Matrox's TripleHead2Go solution with just one or two video cards.