Thanks Eddie, so this isn't restricted to Asus boards but seems linked to b350/450 and maybe x370 boards using a beta bios?MSI B450 Gaming Pro Carbon
T force delta rgb 16gb @ 3200
Ryzen 5 3600
And sapphire vega 56
The bios for my board is in beta. The only weird thing is before I upgraded cpu-z read i had the beta version now it reads i have the previous version of the bios. I can tell thats wrong because the uefi changes once in beta.
I found a thread over on reddit which shed some light on voltage readings (pay extra attention to posts by 'amd_robert') https://www.reddit.com/r/Amd/comments/cbbfce/_/etefuer View: https://www.reddit.com/r/Amd/comments/cbbfce/3900x_being_overvolted_on_amd_ryzen_power_plans/etefuer/?context=3
I guess we'll see a new Bios revision soon which will hopefully bring some improvements.