Thank you so much for the thorough answer. Is the USB quiet method very expensive?  Can they be run, or can any systems be run without any cooling if they sit in an air conditioned room that’s about 78°?
I read something old online that said the Goldshell KD2 is the quietest mining equipment at 55db but I don’t think it mines Bitcoin, or maybe it does.
Regarding your question about the 600kwh a month accumulation… I could let it accumulate for several months at a time and then run the equipment. Basically near the end of the year I’ll have 7,200kwh to use. I could run the mining equipment for a month straight and then turn it off for several months.
Your analysis was excellent. Thank you. If I do figure out an option and do get a setup, any chance I can tip you to help me get it?
I’d really like quiet as possible and not requiring fans and extra cooling.
Does the equipment require 220v or 110v with really high amps?
Thanks.