some info if your thinking of having a 4000 cpu later.
Initially, AMD had not announced support for X470 and B450 motherboards, stating that only the newer X570 and B550 motherboards would accommodate the Ryzen 4th generation architecture due to the former motherboards’ inability to squeeze in the space heavy microcode updates needed to accommodate the 4th generation processors. The 400 series motherboards are only a couple years old, however, and if you’ve got one of them, you’re in luck because AMD has changed its mind. They’ve decided to discontinue support for some previous processor versions to create flash space that would allow for microcode updates to facilitate the adoption and operations of the Ryzen 4th generation processors.
Expect a BIOS update to come out that will perform these microcode updates on your device to allow for the newer Ryzen microprocessors to be supported but bear in mind that many older microprocessors will no longer be supported if you apply this update. The way this BIOS update will roll out in a regulated manner is that customers who purchase the new Zen 3 Ryzen processors for 400 series motherboards will be given this irreversible update that will allow them to use the newer microprocessors. The reason for this regulation and verification is that if support for previous processors is removed in the new update and you do not have the new Ryzen processor installed in your system, your device will not boot up. To ensure that the update is used as intended among users who actually intend to upgrade to the 4000 series of Ryzen processors, AMD will ask for some proof of purchase of the new 4th generation processors before handing you the update.
When this update comes out for the particular motherboard you own will depend upon your manufacturer. There may even be some delay until the BIOS update comes around after the new Ryzen processors actually hit the market. Support in the X570 and B550 motherboards is already announced and that’s what AMD recommends to have to accommodate the new Ryzen processors, but that is not something they’re forcing down your throat for the sake of upgrading to the new generation of Ryzen. If you’re a 400 series motherboard user with the X470 or B450, you can wait it out for the BIOS update for your motherboard as promised. This BIOS update, however, will be the last processor update for you and you won’t be able to accommodate beyond the 4th generation of processors according to AMD. This step was taken to increase the longevity of the AM4 socket 400 series of motherboards which are not old enough yet to lose official support. If you own a 500 series motherboard, then you’re all set for the release date and will have the first set of BIOS updates out to accommodate the new Ryzen 4000 processors.
