Of course. But their hot ends are nowhere near 220C. I don't think such heat pumps even exist right now except in labs.

Looks like some experimental pumps within this region have CoP around 30%: https://www.sciencedirect.com/science/article/abs/pii/S03605...

So you'll need a lot of additional energy to run the pumps. Which will require additional radiator area.

> The 220C is the temperature at the hot end of the heat pump. The chips are on the cold end of the heat pump.

If we want the heat pump's cold end at about 40–65°C, then for each 1MW of GPU heat, we need another 1MW of heat pump power. Now you need 2MW of solar power.

Good news is that the radiator at 227C (500K) can emit about 5× more heat per square meter than at 57C (330K)

ISS's two external cooling loops hold about 540 kg of ammonia combined, together they dump 70 kW.