Do you need a new power supply for Nvidia's GeForce RTX 3080?
Annoying basic question about GTX 1080 ti GPU power supply - Windows Hardware - McNeel Forum
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? :
Is a corsair 600cx PSU good enough for a GTX 1080 ti and i5 4690k? - Quora
Testing GTX 1080 SLI Performance with Dual Palit GeForce Cards > Power Consumption, Wrap Up | TechSpot