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this post was submitted on 09 Sep 2024
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It would be way hotter in general. Conductive cooling requires a medium to transfer heat. In a vacuum, you only have radiation, which doesn't cool quickly enough for a shit ton of processors. In the sun, it would be worse, but they would need cooling even in the shade.
Now I am wondering can a fan move heat in a vacuum? I assume not because they don't move the heat but the air around the hot thing, but I also don't know much about thermodynamics especially in a vacuum.
You nailed it. Fans move air. Hot air away, cool air in, and that's how a fan cools. In a vacuum, it would just spin until friction slowed it down, so technically it would generate heat.