Apple failed to officially announce the memory bandwidth from the M1, but says the M1 Max is "almost 6x the memory bandwidth of M1." This, in theory, puts the M1 at all around 66GB/s of peak memory bandwidth. two And M1 Pro can be configured with as many as 32GB https://emiliogebzw.boyblogguide.com/27695273/indicators-on-ajm-slot-you-should-know