

OpnSense running on an ex-lease HP i3-something SFF desktop. Added several cheap half-height GigEth PCIe cards for the LAN bridge.
It is way over spec for what OpnSense needs but it was cheap and extensible.
UPS power supply.
There’s a tangle of PoE injectors which makes me sad. PoE PCIe cards appear to be ludicrously expensive here for no apparent reason.





No idea, I’m not monitoring power consumption at all.
I’m just assuming that the Intel CPU based system will idle at X Watts, peak as Y Watts, and that an ARM based appliance would idle at X and peak lower than X.
If any thing, I noticed that my UPS batter didn’t last as long during an extended ded outage once I deploy the SFF PC.
Also, TCO, if I save $100 on the price of the device (that draws more power) that is a lot of power savings required to break even.