I got this CPU and it has problems booting, dunno if RMA because it does boot into BIOS. Very little info no the web since everyone is going to 5000 series which I don't expect would run well is this MOBO. What happens is, when it want to load WIndows then is hangs forever. I already am on Ryzen 1600 non-AF and it works fine but the Ryzen 5 4500 doesn't load Windows.
I am able to load and change things in BIOS with the new processor but still can't boot into Windows and my MOBO is GA-AB350 Gaming 3 Rev 1.0.