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Sure, they'll last shorter, but at least they will work.

Besides, couldn't they keep it at a stable -20 °C?

> ICs frequently passing zero degrees, which aren't packaged in completely water impermeable packaging like ceramics or metal are also having issues

Issues with condensation?

Well, that makes sense. So why can't they be packaged in metal or ceramics?

> Well, that makes sense. So why can't they be packaged in metal or ceramics?

Money

> Sure, they'll last shorter, but at least they will work. Besides, couldn't they keep it at a stable -20 °C?

I can't say that. I'm not a thermal engineer

A CPU costs at least $50 already. Is it that much more expensive to package it in metal?

Also, aren't they already packaged in metal? On graphics cards, the dies are directly exposed.

Liquid nitrogen cooling can already get good results in overclocking, so it seems like it should work here too.