The supplemental PCIe power feature complements the ATX 3.1 power standard ... beyond the system's typical 12V power supplied by the 24-pin connector. While the 24-pin connector handles PCIe ...
The new MSI MEG X870E GODLIKE motherboard should rock a huge 288 x 304.8mm design, using the same E-ATX form factor ... which had 105A power stages. There are 2 x 8-pin power connectors to feed ...
That combines with the existing 168 W of board power delivered by the 12V rail in the main 24-pin ATX power connector to provide a grand total of 420 W. Note, that's 420 W just for the PCIe slots ...