It's been tried. Nothing's really worked yet.

https://en.wikipedia.org/wiki/Computational_RAM

https://research.ibm.com/projects/in-memory-computing

Long ago I thought that, at least for very generic / task-agnostic operations such as wiping, moving, duplicating chunks of memory, a chip-on-dimm could be of use (but maybe this is already the case and I don't know about it)

And encryption, hashing. Hashing could be used for deduplication and caching.

Kinda like SSDs encryption ?

I don’t know… I was thinking these cores would be programmable.