There's nothing nonsensical about the claim that there are AMD and Intel systems using 128-bit LPDDR5-6400. AMD's mobile processors started supporting that conf

There's nothing nonsensical about the claim that there are AMD and Intel systems using 128-bit LPDDR5-6400. AMD's mobile processors started supporting that config last year, so in spite of this year's mobile processors being a bit late the market is already full of systems so equipped. Intel's mobile processors as of earlier this year also support this memory configuration and speed, and systems have been shipping from multiple vendors for well over a month; they're not exotic or hard to find. There's even at least one announced but not yet shipping Intel-based system that will use LPDDR5-7500!