It's soldered to the package. The actual RAM components are the very same discrete BGA ICs that would normally be soldered to a motherboard, but they've soldere

It's soldered to the package. The actual RAM components are the very same discrete BGA ICs that would normally be soldered to a motherboard, but they've soldered them right next to the SoC die instead for tighter signaling. https://i.imgur.com/Y3PLp33.jpeg https://i.imgur.com/Y3PLp33.jpeg Anyway results are what matters, and the module in the OP has bandwidth figures half way between the M3 and M3 Pro while retaining upgradability.