It sounds like a lot but it almost isn't? Like this is ~50x bigger than an Nvidia A100, and the A100 pulls up to 400w. 50 * 400 ~= 20kW. So in terms of thermal density it's in-line with existing GPUs.

That said, I'd be fascinated to see the cooling solution. Is it just a massive copper heatsink & a boatload of airflow? Typical approaches of using heatpipes to expand the heatsink won't really work with something this big after all. Or is it a massive waterblock with multiple inlets/outlets so it can hit up a stack of radiators? How do they get even mounting pressure across that large of an area?