> The cited article is pretty clear: the M1 Max maxes out at (approximately) 100 Gb/sec per a single CPU core, 243 Gb/sec per a CPU cluster, and 409 Gb/sec per the entire SOC.

So, which part of "We are talking about the memory bandwidth available to the CPU cores and not all the co-processors/accelerators present in the SoC" you didn't understand?