[bryanlarsen]

Apple uses LPDDR4 which comes in densities of up to 16Gb AFAICT. So they can have ~5X as much memory using the same bus width.

[nhubbard]

Apple uses LPDDR5X, not LPDDR4, iirc

[xxs]

Of course it's ddr5 not 4.

[IndrekR]

From PCB perspective, LPDDR5(X) interface is quite different from regular DDR5. Same with DDR4 and LPDDR4. Source: have designed few boards with different memory interfaces.