Yesterday Framework unveiled a small form factor desktop based on Halo Strix.

Halo strix seems to require memory with high bandwidth, specifically 256-bit LPDDR5x, according to the specs.

Allegedly, the company said they tried to find a solution to use modular memory (e.g. lpcamm) but it did not work out signal integrity wise (@36:10, from the unveiling video above and here.)

So I’m wondering exactly, why not?

It seems LPCAMM2, offers a 128-bits bus and can scale today up to 7500-8500 MT/s.

This would offer 7500 x 128 / 8 = 120GB/s. Would it not have been possible to simply place two LPCAMM2 modules, to cover the full extent of the 256-bit bus and reach the 256 GB/s, by using the 8000 MT/s configuration?

Did they reach integrity issues because they tried to reach the speeds using only one LPCAMM2 stick? That would indeed have been impossible. Maybe LPCAMM2 can not be combined (perhaps due to space as they are using the mini-ITX motherboard format)? Or am I missing something?