I recently damaged one of the pcie slots on my old computer so I built a new computer from scratch with a ryzen 9 7900x cpu, ASUS rog b650e-f motherboard and 64gb ddr5 ram, For the graphics cards I am running dual Gigabyte rtx 2080ti turbo cards, Now before anyone tells me the "Just sell them and get something newer" recommendation, I am trying to avoid doing that. Getting both cards to fit in the pc in the first place was a complete pain as the pcie 16x slots are too far for any nvlink bridge that is on the market, So I improvised and mounted the cards on pcie risers which allowed me to get the NV link bridge connected to both cards. The computer also has 2 m.2 nvme ssds that occupy the top two slots on the motherboard. Now here is the issue, windows recognizes both cards. they both exist and work fine but in the Nvidia control pannel there is no option for sli, in GPU Z the cards are identical except one factor, Card 1 bus interface is PCIex16 3.0 @ x16 and the second card is PCIe x 16 3.0 @ x4, That itself I know is somewhat of a problem as Ive heard sli requires both cards need to run at x8 although no matter how much I look through the bios there is no real option to configure this like tutorials on the internet would suggest. Rather the only pci option is the PCIe bifurcation which gives the options for auto, 8x8 and pcie raid, when I run the computer in 8x8 one monitor boots to windows on card 2 the other monitor connected to card one is stuck on the asus rog boot logo. This all makes zero sense, if there is any given way I could make this work any help would be insanely appreciated. Thank you!