Quoting Georg Holzmann grhPD@gmx.at:
Question regarding the grafic card: of course ati radeon and nvidia seem to be the best solution - but expensive has anyone experience with e.g. Matrox G450 Dualhead (they seem to have good linux support) - dri on both screens ?
Any 100 Euro Nvidia card will be more than adequate for what you want to do. I suspect the Matrox will be entirely inappropriate for GEM.
1 vs. 2 computer: so I think it won't be possible with 1 computer and 4 screens ?
You would have to either do Nvidia's SLI, which is very expensive, or resort to PCI cards which are much slower for texturing. 2 Computers each with a dual head AGP card is probably the way to go. I have done lots of sync between multiple machines using OSC and it works pretty well. I can usually have multiple machines play the same movie and each display part of the frame or move the image between the three with very good sync.
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