It's ok but the system idles at about 50°C (ambient temperatures are about 28°C) regardless of whether the IPS is enabled or disabled. Have OPNSense installed on it with about 10K rules active and the CPU usage occasionally spikes to 90+% when were using all the bandwidth our ISP provides (15 Mbps download, 2 Mbps upload).If you're considering running an IPS for speeds above mine I'd probably recommend getting a system with a better processor and/or cooling solution.