Honestly, to be fair, You can buy two more powerful 1L dell optiplexes or HP prodesks for this cost. i5-7/8xxx with 8G/16G ram often go for $40-50 on eBay.
Install proxmox and HAOS and you can use the rest for other stuff.
Install proxmox and HAOS and you can use the rest for other stuff.
And honestly, if you're in many states of the US - power's consumption is not necessarily an issue. Electricity is dirt cheap in the States, but I see your point.