@colchon753 Apologies for the delay in response and all the inconvenience caused because of the issue.
I had discussion internally and below is the response I got :
HBv3 already offers Constrained Cores VM sizes so you can get HBv3 with fewer cores per VM, while keeping all other global assets like memory, networking, etc.
We just open up for a new AMD VM sizes Dasv5, Dadsv5, Easv5, Eadsv5 for private preview that would based on AMD Epyc 3 processor.
We currently don't have an ETA when it will be GA but work is on the way.
Hope it helps!!!
Please "Accept as Answer" if it helps so it can help others in community looking for help on similar topics.