I thought an interesting point was the liquid cooling -- unclear how important this is to them, but I'm guessing it means that they designed it with a TDP that requires liquid cooling. This (wanting higher density) is the opposite of the trade-off that I was expecting. In my (limited and out of date) experience, power was the limiting factor before space, and I believe AI racks have very high power draws already. I w…
On the other hand, if you are building your own data center, which is the case for Microsoft, presumably you can arrange high power zone to run GPUs.