Nvidia's mysterious 12-pin connector for the RTX 3080 and RTX 3090, “Chinese whispers”, rumors, senseless panic and a matching cable from Seasonic | Background Story | igor´sLAB
Nvidia Ampere Graphics Cards May Use New 12-Pin PCIe Power Connector | Tom's Hardware
Amazon.com: Cable Matters 2-Pack 6 Pin to 8 Pin PCIe Adapter Power Cable - 4 Inches: Computers & Accessories
Amazon.com: 12" 8-Pin PCI-Express PCI-E Video Card Power Male to Female Extension Cable with Black Sleeve: Computers & Accessories
12" 12Pin PSU to Dual 6Pin PCI E Graphics Card Modular Power Supply Cable for Seasonic X Series|modular power supply|pci-e graphics carddual psu - AliExpress
x2 6 pin Female PCI-e GPU Power Connector Socket - Black + 12 Pins | eBay