What I was able to find out is that the ten 4090s will take less power consumption than the thirty 3070s, if you are in my shoe which offer will you choose and why?
Then maybe you should take the 4090s when they take less power consumption as the 3070s.
I guess it will be not that much difference but lower power consumption is good and if you dont pay for any electricity you use,
you also should go for the 4090s as they dont need that much space as the other GPUs.
If the 4090s have no issues or damaged i would take it.