Two alternative setups for the gigampz boards: you can fit 2 16awg wires per terminal if you need to balance larger loads. I sell both the 6" 18awg splitters and 24" 16awg leads in my signature link

This is what happens when you use adapters with thin wires unable to carry a load. notice this is an 8pin ATX to 6pin PCIe adapter that burnt up under 200w load, probably only a 22awg wire at best. it even melted into a nearby fan wire.

notice the difference between the burnt-out adapter and the 18awg y-splitter I sell. There is also a 16awg tip from the 24" cable visible, which is a little bit thicker again.