pfSense combines router, stateful firewall and VPN capabilities in one device.
pfSense combines router, stateful firewall and VPN capabilities in one device.
I believe you might have missed the point here. I don't think a router with an i3/i5 clocked higher is weak when compared to a gaming PC. Unless you understand what the person means by "not very powerful," you should be much clearer when making such statements. There are many devices available now that come pre-installed with pfSense, including Atoms, Celerons, older or laptop-style i3/i5 processors. These won't struggle with higher speeds and could easily slow down OpenVPN. As noted before, a 2200G handling 20% load at 150Mbit without mentioning OpenVPN isn't sufficient for Gigabit in one direction, let alone full-duplex. There are plenty of i3/i5 and even i7 CPUs that match the performance of a 2200G.
I'm really pleased with it—still haven't tried using the VPN yet (just been in town or at home since setup). Once I can connect externally, I'll let you know how much CPU usage it's handling. With the regular tasks like router/firewall and DHCP running, and Suricata on standby, it stays around 2% CPU.