COMeap ATX CPU 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Adapter Cable for Corsair Modular Power Supply 25-inch+9-inch (63cm+23cm) : Amazon.co.uk: Computers & Accessories
How to Connect Power Supply Cables (& Motherboard Diagram)
Comparison: Cable Length - Power Supply Roundup: 650W-680W