To be fair NVIDIA used to publish more detailed "white paper" for their GPUs ex. [1] and CPU textbooks like H&P [2] draws a lot of details from these. This less detailed "whitepaper" still has a scent of these old tradition.

[1] https://www.nvidia.com/content/PDF/nvidia-ampere-ga-102-gpu-...

[2] https://www.amazon.com/Computer-Architecture-Quantitative-Jo...

I'd suggest reading the wiki articles about it for an introduction, and Ch 5 of https://www.amazon.com/Computer-Architecture-Quantitative-Jo... for a detailed understanding.

Right now you're asserting things about all this, while not being familiar with relatively basic aspects of how it works.