This only works for a while on Windows 10 as the service will eventually become enabled. Depending on release we saw some PC’s last a month while others could last a year with the service disabled.
For anybody wondering why, these stations had deep freeze which reverted any changes upon reboot.
The SoC and memory are separate dies with different manufacturing processes. In the case of M2 it was TSMC for the SoC and SK Hynix for the memory.
When it comes time to package them together, the SoC and memory are soldered to a interposer layer. So the only difference is which size memory chips they solder together for the different memory configurations available.