Know it is hard to do, but any comparisons of how fast RT with XYZ card is vs. a CPU

[GidPDX]

I'm just wondering what render time wise, on average, with compatible scenes, and RT GPU is vs. any higher range Intel processor.

For instance...what is roughly the intel = to a 1080 GTX? I know there are RT limitations etc. but I'm just wanting to get a general sense beyond how fast denoiser runs.

Anyone know of a post/site?