AMD does seem to be trying new stuff with Strix Point Halo, but in-package RAM seems like it'd add new physical challenges that probably need a defined market b

AMD does seem to be trying new stuff with Strix Point Halo, but in-package RAM seems like it'd add new physical challenges that probably need a defined market before they swing for the fences? Because it's not just the memory chip, also the interposer it's stacked on top of, which now needs to be bigger, which means you need to find more room in the PCB (today) or a bigger silicon interposer (likely in the near future) which reduces yields, and so on and so forth. If you wanted to have more than the very limited SoC RAM, you'd also then be looking at having multiple DRAM controllers, which also adds to surface area, and so on and so forth.