850
The RAM shortage is coming for everything you care about
(www.theverge.com)
This is a most excellent place for technology news and articles.
Sadly a lot of this is chiplet interposer mounted HBM and not UDIMMs. The HBM cannot be removed from the products it's installed from so unless you want an H100 it won't be of much use. The remainder is mainly server RDIMMs and LRDIMMs. UDIMMs for desktops are in short supply because they cut manufacturing to make other things.