Videocardz.com--- rtx3080 performance 168% vs 2080 in cuda and opencl benchmarks.
40% vs 2080ti
jaaha....

NVIDIA GeForce RTX 3080: 168% of RTX 2080 SUPER performance in CUDA and OpenCL benchmarks - VideoCardz.com
The first post-announcement benchmark of the GeForce RTX 3080 graphics cards. NVIDIA GeForce RTX 3080: 168% of RTX 2080 performance The GeForce RTX 3080 has been put through a number of CUDA and OpenCL tests with the Compubench benchmark suite. The GeForce RTX 3080 graphics card has been tested...

The RTX 3080 has on average 168% of RTX 2080 SUPER performance and 138-141% performance of the RTX 2080 Ti.