AMD Does An Intel, Axes Zen 3 on 400-Series Motherboards, Our Thoughts
Updates: AMD has refrained from commenting and therefore addressing any of our questions at this point, but we have had some interesting conversations with a few of their partners. Again to be perfectly clear on this point, board partners cannot support Ryzen 4000 series processors on 400-series motherboards without AMD’s help, it’s simply not possible. So don’t expect an AIB to crack the code and open up support, again without AMD’s support it’s not going to happen.
AMD Does An Intel, Axes Zen 3 on 400-Series Motherboards, Our Thoughts - YouTube