I think anyone with a decent 600 watts psu should be fine
I hope so for the 3080. I have a Seasonic 650W Modular PSU with a 3700X, 2070S, 1TB SSD AIO Cooler and 4 case fans, wireless keyboard and mouse. I am more concerned about spending £650 on a 3080 and to just recycle old games I have already played and the apparent lack of quality games coming out to justify my spend. After all, I resort back to TF2 after all is said and done on my LG C9 at 1440p lol