Multi GPU Technology Analysis - Nvidia SLI and AMD CrossFire Scaling, Frame-Time and Value Comparison - Performance Per Dollar (Per GPU) Comparison and XDMA Analysis
Nvidia GPU's Relative Performance Comparison Chart (last few generations) (credits to u/soomrevised) : r/nvidia
AMD Radeon RX GPUs Witnessed Market Share Gain Versus NVIDIA GeForce RTX GPUs in Q3 2020
The GPU power ladder: all current graphics cards ranked | Eurogamer.net
AMD Reveals More Radeon RX 6000 Series vs. Nvidia RTX 3000 Benchmarks | PCMag