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Framework proved repairable laptops can work, but almost nobody is willing to buy one
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
Does a new generation mobo/chip combination generally still support the older generation of RAM?
Nope, not on intel core ultra 3 unfortunately (unless you have LPCAMM2 lying around, which is unlikely), that is the risky part I mentioned in the end.
That's what I get for only reading 2/3 of your comment before responding.