In the real world hardend electronics tend to come in 2 different ways . One Gadolinium Arsenide computer chips . I think the rare earth materials would be more expensive . Than there is micro vacuum tubes MIGs use totally EMP proof . I cannot see the first one taking any extra space or tonnage than standard but the second might take space and likely incur a penalty as it is replacing a more compact system perhaps small ****** pit and the ton and space acquired provides what is needed .