Been a while since I was heavily involved in high-density data centers... How does that work with traditional hot aisle/cold aisle layouts? Seems like you'd need to adjust the cooling to have an air channel up the middle of the rack?
In general, high-density or supercompute systems are installed with custom racks, cooling, power supplies, etc. This doesn't need anything custom, just something that isn't always the default in some DCs.
They're ARMs, they don't need much cooling anyway.