GeForce RTX 3090 Ti graphics cards are bundled with 3x8-pin to PCIe Gen5 (16-pin) power adapters - VideoCardz.com
GALAX GeForce GTX 1080 Ti HOF: 3 x 8-pin PCIe connectors
Does this GTX 1080 has a 8-2x6pin connector | MacRumors Forums
Would it be possible to run an old GTX 1080 using a single PCIE power cable that's split in two as seen in the picture below? Or will there be stability issues? :