PCIe X8 To X16 Graphics Card Riser Cable Riser Pci Express X16 X8 With SATA 4Pin Power For RTX 3060 ETH Mining Bitcoin Miner|Computer Cables & Connectors| - AliExpress
GeForce RTX 4090 and Core i9-13900K PCIe scaling test shows 2% difference between x16 and x8 modes - VideoCardz.com