https://wccftech.com/amd-ryzen-3000-series-and-x570-chipset-compatibility-quick-guide/

AMD just announced their lineup for the Ryzen 3000 Series along with details regarding their new X570 Chipset for the AM4 platform. They told us AM4 would be with us for a while and they were right, but unfortunately, we’ve gotten to the point that there are caveats.  This isn’t a bad thing or a dig at AMD at all, so put that out of your minds before we move further in this conversation.  AMD did announce that the AM4 socket would be supported through 2020 and so far they’re living up to that promise, but there have been a few changes of the life of the socket so far.  It started its life out supporting simple quad cores back with the 7th Gen A-Series CPUs that were Carrizo based just before the arrival of the 1st Gen Ryzen CPUs.  Then Ryzen came along offering up to 8 cores on the same socket, fundamentally changing the landscape of the mainstream platforms forever.

Now comes the next big leap with the announcement of the Zen 2 based Ryzen 3000 series on the 7nm node along with 50% more cores (for now, more to come) and still slotting right into the AM4 socket.  But with the Ryzen 3000 series and X570 chipset comes a major change on the motherboard side, PCIe Gen4.  This alone makes compatibility a bit dicey, and thankfully AMD has gone ahead and made a very handy chart to help you figure out what CPU is supported by what chipset.  Interestingly enough the 1st Gen Ryzen CPUs (including those with Radeon Graphics) are NOT supported on the X570 chipsets, so those with a Ryzen 1×00 series chip will need to upgrade their entire system if they want to take advantage of the platform.  But, those running Zen+ based CPUs and APUs will be in the clear.  Incidentally, X370 and B350 support for the Ryzen 3000 series CPU will be dependent upon the motherboard vendor and whether they were either forward thinking enough or they’re willing to put in the effort to make them work.