The reason is it consumes less power compared to your old desktop.
It costs only 7$ to run a plug computer for a year compared to $125 for your desktop
It costs only 7$ to run a plug computer for a year compared to $125 for your desktop
Perhaps an old laptop with the lid shut would be more efficient than a desktop?
We use a load of old IBM's in a similar way as monitoring stations/servers to shove into networks. For fun I've been running a few attached to power monitors to see what it's like; not brilliant is the answer. Power consumption is roughly the same as an old Dell server we also use.
For Ex, the plug consumes 5 Watts. Probably saving $100 for a year is not much for you.