> I have also seen mention of this in spacecraft design discussion. The concept being that for things which are powered from a radioisotope thermoelectric gener

> I have also seen mention of this in spacecraft design discussion. The concept being that for things which are powered from a radioisotope thermoelectric generator, it's safe to treat the RAM as storage. I don't buy it. They specifically design these systems with duplication in nature in case RAM gets corrupted by radiation in space. So you can't treat it as storage, but for very different reasons.