Molex (company making the pci-e power connectors) dictates the max spec per pin to 8A according to an earlier posted PDF, so 400W is outside even the most optimistic estimates! Not saying it wont work, but why are they even gambling with this when it would cost them a few bucks tops to use 2 of them.
OK, so 6 pinsx8A=48AX12=576W per each PCIe cable max?
To me it sounds a bit too much, or maybe not each pin (out of 6) counts?
I am very far from being an electrical engineer, sorry.
Each PCIe connector has three 12v wire 'pairs' i.e. one hot line (yellow) with associated ground wire when connected. This then yields 3 pins at 8A which is 24A@12V= 288W per connector at rated max. Where does the rest of the power come from or is it even needed is the question?
^^^This sums it up perfectly.
Nah you forgot this,
