Their rack scale from-scratch redesign includes fans big enough that they've reportedly managed to cool CPU hardware that was actually designed for water-coolin

Their rack scale from-scratch redesign includes fans big enough that they've reportedly managed to cool CPU hardware that was actually designed for water-cooling, with no expectation for air cooling (though admittedly, they say they only achieved this just barely, and with a LOT of noise). That seems like something that's going to be objectively verifiable as a step up in efficiency.