For the Psu-s
I have a question. If you have a machine what eats about 700w and you have a 850w Psu, what will you do if somhow we can overclock them and need some margin?
I have a 1500w psu and a lot of big fans to answer this.
But it's only a theory......
A 850W quality PSU will most probably be enough even for some overclocking if possible, granted a Jupiter uses less than 600W DC power.
And you'll have a psu at 100% load.
Personally I don't like it. (It's my fault)
PSU are rated on DC load not AC. With efficiency around 90% 850W DC would be like 935W AC at the wall. Nobody anywhere has reported power usage anywhere close to that. You can only push so much power into the unit. The chip can only handle so much current, and even if it could use more the DC regulators have a finite capacity (4 @ 40A ea per board).
To push the clocks higher you need more power you don't need 100% to 200% additional power. It is like saying I can push 1,000 into a GPU and make it go faster