Amazon.com: COMeap 8 Pin Male to Dual 2X 8 Pin (6+2) Male PCI Express Power Adapter Cable for EVGA Power Supply 25-inch+9-inch (63cm+23cm) (NOT Compatible with Seasonic Sentey and Corsair Power Supply) :
StarTech 4-Pin Female to 8-Pin Male EPS Power Adapter EPS48ADAP