Not sure how small you want it but there are smaller and less power hungry x86 alternatives too. The more server-oriented atom chips (2-16 cores) are pretty dec

Not sure how small you want it but there are smaller and less power hungry x86 alternatives too. The more server-oriented atom chips (2-16 cores) are pretty decent and the much more expensive but more powerful Xeon-D (4-16 cores) can both be found in mini-ITX motherboards and pretty low-power configurations. Have not kept myself up to date in case AMD offers decent alternatives in this segment. Though my hope would be for ARM to lower the price point for these kind of servers.