Why AI data centers still rely on water cooling over air cooling?

wren337 · reddit · 2026-08-28

The post critiques the idea of space-based data centers with radiant cooling, arguing that if such a method worked in space, air-cooled solar data centers on Earth would be vastly more efficient and cheaper. The author suggests the math doesn't support these alternatives, implying that space cooling is actually harder than Earth-based solutions.

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