Plenty for a low power firewall. Since this has RAM and a big enough SSD for pfSense or the likes, I think it's a great price for a complete package. I'm still running one of these in colo myself. It's a bit dated, but for the 100mbit I have, it's more than adequate (even IPsec).
SuperMicro 1U Rack-Mount Intel Atom PC, 1.8 GHz D525, 4 GB RAM, 32 GB SSD, Win 7 | eBay
SuperMicro 1U Rack-Mount Intel Atom PC, 1.8 GHz D525, 4 GB RAM, 32 GB SSD, Win 7 | eBay