> Currently the only details I can find about the microarchitecture is either press waffle or things reverse engineered via timing (you can look for bumps in gr

> Currently the only details I can find about the microarchitecture is either press waffle or things reverse engineered via timing (you can look for bumps in graphs to find the widths of various speculative features of the CPU). Tbf, the agner fog's unofficial CPU optimization manuals[1] (for x86 CPUs) are quite good. > Intel, like them or not, have genuinely very good documentation Eh, depends. (Not talking specifically about optimization docs.) On the whole, I find intel documentation functions better as a reference, where amd documentation functions better as explanation. 1. https://www.agner.org/optimize/ https://www.agner.org/optimize/