Hi to everyone, I've built my rig las august using the following components
CPU: Ryzen 5 3600+aftermarket cooler (Coolermaster Hyper 212 black)
Motherboard: Asus ROG Stryx B450-F Gaming II Bios version 4602 (latest available)
RAM: 2x BL2K8G36C16U4R (8x2 gb)
VGA: EVGA gtx1660 SC
SSD: crucial mx500 1tb m2 sata (hosted in the m2 slot under the cpu socket)
HDD: 1xseagate firecuda sata 2x wd ezex sata
No issue at all in making the thing work flawlessy at the supported memory clock (3600mhz 2xinfinity fabrick clock) using the provided CMOP profile, but I have experienced random cold boot issues.
In these occasions the system will power up, but it will not emit the classic "beep" before showing the POST screen. A push to the reset hw button solves the situation, the second boot is always good. I have no clues about the cause, but I am aware that similar issues are widespread in the B450/B550 range of products.