> This is why if you want the absolutely most power efficient NAS/home server and you don't need a lot of cpu/ram people use p4 era hardware

Calling bullshit on this one, my p4 nas chewed through power, I upgraded to one of the low power modern Celeron boards which drew around a quarter of the power.

My p4 had a big heatsink and fan, my quad core Celeron is passive cooled with a tiny heatsink in comparison.