Making a GPU with an 8 pin work with a 6 pin power – FHR's Blog
GPU Power Cable Guide — All Connectors Explained
16 AWG 6pin to 8(6+2) pin 36-Inch Long PCIe Cable - Parallel Miner
PCI-e 6 Pin Female to Dual 8 Pin (6+2) Male PCI Express Power Adapter Cable for EVGA Modular Power Supply Cable for Graphics Video Card 8 pin Splitter 8.86 inches(6PCS) - Newegg.com
Dual 6 pin Female to 8 Pin Male PCIE GPU Graphics Vedio Cards Power Cable US | eBay
How to connect 6 pin AND 8 pin GPU to power supply : r/buildapc