If the goal is smallest VPN box instead of best for the price server then the float performance doesn't really matter much and both are probably overkill -> too

If the goal is smallest VPN box instead of best for the price server then the float performance doesn't really matter much and both are probably overkill -> too large. Both the n100 and the pi 5 can reach multiple gbps of wireguard throughput, whatever you can get in the smaller total form factor is more ideal than ridiculous throughput. A table of devices and wg speeds can be found here https://forum.openwrt.org/t/a-wireguard-comparison-db/187586 https://forum.openwrt.org/t/a-wireguard-comparison-db/187586. There are plenty of interesting tiny options, particularly if you don't need a full gig.