For the sake of the conversation,

> Apple uses LPDDR4 modules soldered to a PCB, sourced from the same Korean company that everyone else uses.

Apple might have sourced and soldered on LPDDR modules from the same company, but it is not LPDDR4 and it is LPDDR5 6400 connected via a 256 (Pro), 512 (Max) or 1024 (Ultra) bit wide memory bus.

> Intel has used the exact same architecture since Cannon Lake, in 2018.

Other than LPDDR5 6400 had not existed in 2018, no Intel CPU has ever used a 512, leave alone 1024, bit wide memory bus even in the server setup. Wide memory bus is conducive of faster concurrent complex builds, and Rust / Haskell builds show significantly faster build speeds as well.