[jvanderbot]

I expect it'll be an ecosystem answer. Given that even personal devices might be expected to go to space or work in a dock or asteroid base, I'd expect most chips are defacto rad hard, probably by a combination of redundancy and lots of hardware accelerated software checks.

If the market demands space ready processors, and the military is primarily focused on space applications, I'd expect most of the best chips to support that radiation tolerant ecosystem.

[arcticbull]

Alternatively, we may develop better technology to block ionizing radiation in space. Then rad-hard will still be a niche application.

[jvanderbot]

We may, but I don't remember anything in Expanse to imply that.