this post was submitted on 27 Feb 2024
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Yeah, especially if you use WireGuard on Linux, which is in the kernel and hardware accelerated. It's efficient enough that routers can run it well.
So unless you're pushing hardware limits, I'd expect it to be a wash.
Yep, just tried this today, and holy hell!
I have older Cisco Linksys WRT160NL running DD-WRT. With OpenVPN I could get 5Mbps capped by CPU struggling at 100%. But today I tried WireGuard, and somehow even while doing 30Mbps, the CPU was just at around 25%.