[jhot]

I'm running truenas on a used e3 1245 v5 ($30 on ebay) and an Asus workstation Mobo with 32 GB ECC and 4 spinning drives. Not sure individually, but the nas along with a i5 12400 compute machine, router, and switch use 100W from the wall during baseline operation (~30 containers). I'd consider that hugely efficient compared to some older workstations I've used as home servers.

[NorwegianDude]

I've been running a E3-1230v3 for over 10 years now. With 32GN ECC, 3 SSDs and 4 HDD and separate port for IPMI I'm averaging 35 W from the wall with a light load. Just ordered a Ryzen 7900 yesterday, and I guess the power consumption will be slightly higher for that one.