CAMM is still less effective than in-package RAM bundled with your CPU. The Framework folks looked into using CAMM for their recent AMD APU-based desktop and it was a no go.

It could be a compromise that’s better than DIMMs, though. Not every task needs this insane memory bandwidth and (as small as it gets) latency, although I admit it’s so damn nice, but it’s also nice that if memory goes bad, I can just replace it.