Since the Zen3 Ryzen still uses the AM4 interface, it is compatible down. Some motherboard manufacturers say some A320 and X370 chipsets can also properly light up the Rye 5000 processor. Now, the evidence is here. There are domestic netizens in the forum map shows that the successful operation of the Rye Dragon 9 5900X processor on the A320M motherboard, which appears to be the Asrock A320M HDV.
In addition, the user BRko feedback on OC3D, Technology Jia integrated AGESA 22.214.171.124 microcode motherboard can also light up the Rye Dragon 5000, of course, PCIe 4.0 shielding.
Of course, it remains to be seen how stable and overclocking performance will be if the 300-series chipset runs Zen3. At present, many manufacturers have opened BIOS upgrades for their B450 motherboard to light up Zen3, Gyega is F60c, Asus version number 8501.