Hey.
I want to run multiple rigs with 4 Radeon 5850's each.
I'm building a large shelf with shelves of 2 setups on each shelf. I want to hook together each shelf to only one power supply, like so:
http://666kb.com/i/c3nl88syzjphlpbor.jpg
How much power would I need for each shelf?

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Also, what motherboard would you guys recommend for such a setup?

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Also, would 1 gig of ram be fine for each setup?

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ALSO, should I just attach fans for each computer, or attach large fans to each shelf?