[brucethemoose2]

You can have your cake and eat it with a wide LPDDR5X bus. This is what Apple does, and its fine. Other specialized chips (like Tenstorrent's accelerators) do this too.

I think an AMD 7900-like approach where the memory controllers/cache are on tiny external chips is particularly practical. Its efficient and economical. I hope AMD (and others) repeat this with laptop CPUS.

GDDRX is not a good fit for laptops anyway because its so power hungry. GPUs and the Xbox/Playstation use it just because its the absolute cheapest bandwidth/$, at the cost of everything else.

HBM is very expensive and being hoovered up by the AI market. I wouldn't count on seeing it in consumer stuff again.