@xxcsu

RX570 Nitro+ uses 150w at dual mining, only eth u can bring it down to 110-120@the wall easy. 6 GPU rig goes below 1000w dual mining.

@arnel

The PSU's you ordered only have 4 PCI-E cables, so you will have to connect 2 cables to 4 cards.
Be carefull here with the power draw, if both cards start start pulling close to 300w, that could be a problem and the connectors might get burned.