Are there any PSU that support 2 or 3 Apollos at a time?
This modular Coursair PSU has 6 PCI power ports and runs silent with my two Apollos on ECO:
https://www.amazon.com/gp/product/B015YEI7LK/. It could run 6 Apollos on ECO.
I ended up getting the 900-1200W Server PSU I linked above. It came with the breakout board and
(10) PCIe cables, 16AWG 6pin to 6pin. Which I'm assuming should work. But I could also be wrong.