I've been running OPNSense on this for a while now and it works well.I have a 800 mbps connection and it hasn't had any issues.I think I would have liked to have gone with a slightly higher CPU since it often goes to 80% CPU during normal use.  However, it doesn't seem to impact the router functionality so probably not an issue.  The only thing I've run into is iPerf3 throttling, most likely to CPU usage.  However, that's not really a primary use case.I love the fanless design. The outside is a bit warmer than I expected.  OPNSense shows the internal temp to be 26C, but I very much doubt that since it is lower than room temp.Would recommend.