Looking at pricing that's still somewhat true, at least was before last year. You could pick up a used DDR4 x86 rack machine for the price of a single module. 5x the power consumption but 50x the performance in flops, bus sizes, transfer speeds, redundancy, IO lol
Still neat, but I always find it hard to put money down on new-ish technologies. They also seem to hold their value pretty well I've been looking for used systems.
If I was living on the move, Id want to build something like this to partially replace my rack and be able to run it on solar or battery/engine power for a while.
