A few month ago, i used my old gaming laptop (HP Omen 15 (2016)) to start a small home server with Yunohost. I recently got an old PC for a few bucks, with a Intel Pentium D 820 as CPU. I thought that as its specs were closer to my hosting needs (just a bunch of files for archives and collaboration with Trilium, no media streaming or anything), I could use the old PC as the server and use my laptop for something else, or give it to someone.

But I tried to check the power consumption of the Pentium D 820, and found 148W idling and 233W under load, while the Omen 15 is probably around 20W idling and 120W under load. So apparently the gaming laptop has both better performances and lower consumption (i guess the fact it's a laptop and the better efficiency of more recent tech are two of the main reasons).

If i'm correct on that, does it make sense to stay with the laptop just because it'll probably consume less ? Or is there any reason to choose the old PC ?