So if you look here:
https://www.nvidia.com/en-us/geforce/graphics-cards/30-series/rtx-3080/
Under performance you notice they tested this on a system with these specs:
Highest Game Settings, 4K , i9-10900K, 64GB RAM, Win 10 X64. RTX ON is RT + DLSS. (10 Series is RT only, not capable of DLSS)...