B450 and X470 chipsets WILL support AMD Ryzen 4000 processors
These AMD 400 and 500 series motherboards already support Ryzen 5000 Zen3 CPUs
AMD Zen 3 Will Not Work With B450 And Older Chipsets –
AMD Ryzen 5 4500 6-Core 12-Thread Unlocked Desktop Processor with Wraith Stealth Cooler Power up your computing experience with the AMD Ryzen 5 4500 3.6 GHz Six-Core AM4 Processor, which features six cores and 12 threads to help quickly load and multitask demanding applications. Designed for socket AM4 motherboards and featuring the 7nm Zen 2 architecture, this 4th generation processor is designed to provide fast, power efficient performance.
AMD Ryzen 5 4500 6 Core Processor
AMD Ryzen 4000 desktop CPUs rumored to support existing AM4 motherboards
What motherboards are compatible with Ryzen? - Quora
AMD caves-in to demand for Zen 3 support on X470 and B450 boards with an optional Beta BIOS, here's all you need to know about AMD's proposed upgrade path - News
What motherboard do I need for my Intel or AMD Ryzen CPU?
AMD B450 And X470 Boards May Get One-way Ticket To Support Zen 3 Processors –
Do both B450 and X470 motherboards support DDR4 3600? : r/Amd
AMD pivots: B450, X470 motherboards will support Ryzen 4000 after all
B450 Vs X470 - what are the differences?
B450 & X470 Motherboards Will Support Ryzen 4000 Series BUT With Some Game Changing Limitations !!
XMG lists AMD Ryzen 4th gen support with B450 Motherboard
