Why is 2000watts for one motherboard a bad idea? I'm asking because I want to gain something here, is 2000watts dangerous for a single motherboard? I'm sure that one 2000watts power supply can power all that 8 pieces of RTX3080 graphic cards, what am I not getting here?
Listen to philipma, because he knows a lot about mining and power, wise words from him
You have to use 240v to think about 2000w PSU, no 120v
In my experience, it's always better to deatl with 5 GPUs rigs, maximum 6, more than 6 become hard to keep running 24/7 without any issue, and you find some problem, your whole system will be off
If you have 2 rigs of 4 3080s, you'll find that is pretty easy to maintain and keep running
It's good to have 2 rigs because you can have more space between cards, 3080s are power hungry, and hot, if you have hot memories, you can have thermal throtling
Another thing to consider is with 2 PSUs you can wire your rigs in a better way and keep PSU running at better efficiency, 70% to 80%