PSU efficiency is the forgotten upgrade

Everyone tunes chips and ignores the 80 Plus rating feeding them. Swapping a tired server PSU for a platinum unit changed my wall numbers more than any firmware tweak.

Can confirm. Also worth checking your cables - warm connectors are watts you paid for and threw away.

Titanium units are getting cheap second-hand as datacentres refresh. Great hunting ground.

I killed a hashboard learning hotair rework and consider it tuition.

Reading this from {place}, my Bitaxe has been at it for 5 days straight and the numbers at the wall still surprise me. Would you do it differently?