I'm looking for enterprise grade hardware, that can manage a couple of wireguard links over which a lot of the traffic will pass. I think I'm looking for an arm or x86 CPU.
if it's going to sit in a DC, pretty much any 1U rack server, fitting the budget, will get the job done.
if you want something smaller, check out This topic is now deleted
Yeah. I was thinking of just going with a 1U rack server with a (couple of?) 4-interface NICs. But I wanted to know if there is recommended router hardware that is better.
openwrt boots off a usb flash drive (if you want), the rest is up to you.
an old Atom E38xx (from Q3 2013), can route 1 gbit at 13% CPU load,
you could (in theory) route 8x 1gbit using that old Atom.
wireguard obviously requires more CPU power, but I could imagine what ever
1U server you get, it should be good enough (without knowing your wireguard
specifics).