So I've been seeing this recently but I've also been having a lot of BSOD and freezing problems with this new build and since the RAM and power supply have been replaced, I opted to RMA the GPU next due to some errors that specifically called out the NVIDIA GPU. At first removing the GPU helped stabilize the system, but within a day or two I started getting freezes again.
I am currently using an old Radeon R2 900 as a temporary fix. I am now being flooded with this message in W10 Pro Event Viewer for APIC 12 and APIC 13. Is my CPU bad?
A corrected hardware error has occurred.
Reported by component: Processor Core
Error Source: Unknown Error Source
Error Type: Cache Hierarchy Error
Processor APIC ID: 12
The details view of this entry contains further information.
System information: (note I have all Windows 10 updates and the latest AMD x570 chipset drivers from this past week)
Original Build with newer GPU: AMD Ryzen 9 3900X @ 4015.42 MHz - CPU-Z VALIDATOR
Current Build with R2 900 GPU: AMD Ryzen 9 3900X @ 4016.86 MHz - CPU-Z VALIDATOR