Because it’s a limit of the platform

https://community.frame.work/t/was-there-no-possible-way-to-...

From the replies,

> A shame, really, as the Ryzen 7640U, 7840U, 7840HS, and 7940HS all support 256GB of RAM.

To be fair, those platforms support dual dimms per channel, which Strix Halo would not, at least not at it's high speeds.

But reciprocally Gorgon Halo 400 just launched and it supports... 192GB. And is the exact same APU.

Memory chips did finally have their first big doubling per chip semi recently (available last February), with 48 & 64GB dimms becoming available. There is some reasonable lag here, that Strix Halo & Gorgon Halonuse lpddr5x, which perhaps had some lag, that 32GB (x4) was the best available. But now with Gorgon Halo being 192GB capable but not 256GB, it sure feels looks & seems like this is just bad spirited fuckery from AMD. https://forum.level1techs.com/t/where-are-the-ddr5-unbuffere...