Proxmox Hardware requirements

The link points to a R640 which is Intel based.
Sure you provided the correct link?
Aside that. Search the forum for the processor name. I guess you will find an answer ;)
 
I have no experience with epyc but have seem a lot of people in the forum who use those processors.
Dual socket in general works brilliant and aside that a very wide range of processors work flawless. Check via search if someone used the 2625 already...