Comment by rybosworld

> Cooling a datacenter in space isn't really any harder than cooling a starlink in space

A watt is a watt and cooling isn't any different just because some heat came from a GPU. But a GPU cluster will consume order of magnitudes more electricity, and will require a proportionally larger surface area to radiate heat compared to a starlink satellite.

Best estimate I can find is that a single starlink satellite uses ~5KW of power and has a radiator of a few square meters.

Power usage for 1000 B200's would be in the ballpark of 1000kW. That's around 1000 square meters of radiators.

Then the heat needs to be dispersed evenly across the radiators, which means a lot of heat pipes.

Cooling GPU's in space will be anything but easy and almost certainly won't be cost competitive with ground-based data centers.