[Tuna-Fish]

Hynix has a 32Gb LPDDR4 chip on their catalog, listed as "in production". If a laptop was LPDDR4 compatible, you could fit 128GB in two double-sided SODIMMs.

[philjohn]

128GB of RAM and long battery life are mutually exclusive.

[jsjohnst]

Except Intel doesn’t support LPDDR4 ram on most CPUs they ship currently.