For a given task, newer computers are more efficient than old computers. My 20 watt Intel NUC easily fills a role that I used to fill with a 200 watt surplus

For a given task, newer computers are more efficient than old computers. My 20 watt Intel NUC easily fills a role that I used to fill with a 200 watt surplus PC. Whether or not an upgrade for efficiency is worth it is subjective though.