La question ne se pose même plus à présent.
On September 17, Nvidia announced it “will no longer be adding new SLI driver profiles on RTX 20 Series and earlier GPUs starting on January 1st, 2021,” and RTX 30-series GPUs will not receive SLI profiles at all. Games that use DirectX 12 or Vulkan multi-GPU implementations will continue to work, but those are very few and far between. “Existing SLI driver profiles will continue to be tested and maintained for SLI-ready RTX 20 Series and earlier GPUs,” the company says, and SLI will continue to work for creative and professional apps.
https://www.pcworld.com/article/357 [...] -2020.html