For a comparison, you could get a 64 processor, 256Gb ram Sun Starfire around 20 years ago[1]. Wikipedia claims these cost well over a million dollars ($1.5 million in 2021 dollars). This machine was enormous (bigger than a rack), would have had more non-uniform memory access to deal with, and the processors were clocked at something like 250-650MHz.

[1] https://en.wikipedia.org/wiki/Sun_Enterprise