> RAM can be trivially read even if full disk encryption is used
I wouldn't say "trivially", but yes, it can be. But if you're that paranoid, you can embed key parts of the motherboard in alumina-filled epoxy. Its thermal conductivity is good, and you can add fins and fans as needed. You can even embed trip wires in the epoxy, to trigger system shutdown if tampered with.
> RAM can be trivially read even if full disk encryption is used
I wouldn't say "trivially", but yes, it can be. But if you're that paranoid, you can embed key parts of the motherboard in alumina-filled epoxy. Its thermal conductivity is good, and you can add fins and fans as needed. You can even embed trip wires in the epoxy, to trigger system shutdown if tampered with.