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> free cooling

Vacuum is an insulator. I think you may have been mislead.

Perhaps you've heard of radiant cooling?

SpaceX has already deployed thousands of functioning computers in space. I think if the vacuum were an issue, we would have heard about it.

it's not a trivial engineering challenge to scale that into space. we're not talking a single sattelite we're talking 100k GPUs and servers

Mislead or … work at an Elon company. Shudder.