Whenever I see press on these new 'rack scale' systems, the first thing I think is something along the lines of: "man I hope the BIOS and OS's and whatnot supporting these racks are relatively robust and documented/open sourced enough so that 40 years from now when you can buy an entire rack system for $500, some kid in a garage will be able to boot and run code on these".
The firmware is UEFI and Vera should have good upstream support. The GPU driver is proprietary though, so you'll have to dig up the last supported version from 2036.
What's the power hookup to just boot one rack? I'd imagine that's more than you get anywhere in residential areas for a single house.