It's more that it's perfectly happy sending all 600w over a single wire if the resistance on the other wires is high enough. Since there's a single point of con

It's more that it's perfectly happy sending all 600w over a single wire if the resistance on the other wires is high enough. Since there's a single point of connection to the card and a single shunt, there's no way to do load balancing like when there used to be two or even three 8 pin cables.