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) :
2.54mm 0.1 Pitch 8-pin Jumper Cable - 20cm long : ID 4939 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: TeamProfitcom CPU 8 Pin Male to CPU 8(4+4) Pin Male EPS-12V Motherboard Power Adapter Cable for EVGA Modular Power Supply (NOT PCI-e - NOT GPU VGA Cable !!!) 32 inches : Electronics
8 Pin PIC Development Board - DEV-00023 - SparkFun Electronics
8 Pin PCI Express Power Female Connector with Pins Black - MODDIY
8 Bit Microcontroller/8 Pin DIP
connector - What are "sense" pins in 8-pin PCI Express power plug? - Electrical Engineering Stack Exchange