i guess it would depend on where the computer is, outside will all those pesky bits of dirt and mirco meteors, or inside the crew cabin, no even sure about the dynamics of heat dispersal in zero g
at the end of the day i guess this will be lighter and smaller than 1kg of copper and six fans for a mega overclocked cpu or having a fire engine pump for a water cooler
so lighter and uses less power for better cooling, got to be a win, and just think if the battery cooling that could happen, smart phones the rock i7 type power, and under 300grams (massive pipe dream, but no doubt the power might be here with in 10 years)
Don't the laws of physics say you can't create or destroy energy, just move it around? So the colder you get the CPU, there's going to be something, somewhere that gets hotter. Right?