I solved that by buying a passively cooled baytrail nano-ITX motherboard 5 or so years ago, and running Arch linux on it. At the time, pis were way slower at di

I solved that by buying a passively cooled baytrail nano-ITX motherboard 5 or so years ago, and running Arch linux on it. At the time, pis were way slower at disk IO and encryption/hashing. Maybe the pi 4 is fast enough now, but I suspect the baytrail is still holding up favorably.