How do a selection of GPUs from NVIDIA’s professional lineup compare to each other in the llama.cpp benchmark?

How do a selection of GPUs from NVIDIA’s professional lineup compare to each other in the llama.cpp benchmark?
With the recent overhaul of our DaVinci Resolve benchmark, we thought it was a good time to do an in-depth analysis of the current professional GPUs on the market to see how they compare and handle multi-GPU scaling in DaVinci Resolve Studio.
For Topaz Video AI, your choice of GPU can make a major impact on performance. But just what professional GPU is best? NVIDIA RTX, or AMD Radeon Pro?
NVIDIA has released the complete family of professional Ada cards. How do they compare to the last-gen Ampere based professional GPUs?