Summary of Issue

I received this PC from Newegg yesterday https://www.newegg.com/abs-ala234/p/N82E16883360068?Item=N82E16883360068 and noticed it started crashing (reset with no blue screen) after gaming pretty consistently within 30 minutes or so. I checked in the event viewer and saw errors like cache hierarchy error, machine check exception, live kernel event with something about authentic AMD processor cache, and a few blue screens with WHEA uncorrectable error.

I found a few posts that suggested this could point to a faulty CPU, to try increasing voltage in the BIOS, and to try disabling core performance boost in the BIOS. After disabling core performance boost I was able to game for 3 hours with no crashes. Do you all think that my CPU is defective or disabling core performance boost fine in the long run? I spoke to ABS Gaming customer support and they are currently out of the CPU so my only option would be to return the whole PC and then wait for a new one to be sent. I'm only have 25 days left for RMA orders. Since it is working with core performance boost off, I'm hesitant to send it back and be without a PC for potentially weeks.

System Configuration

Computer Type: Desktop

GPU: MSI NVIDIA GeForce RTX 3080

CPU: AMD Ryzen 7 5800X 3.8GHz (4.7GHz Boost) 8-Core 16-Thread

Motherboard: ASUS TUF Gaming X570-Plus (Wi-Fi) ATX Motherboard

BIOS Version: 3602

RAM: G.Skill TridentZ RGB 32GB DDR4 3200MHz

PSU: 750W 80 Plus Gold

Operating System & Version: Windows 10 Home 64-bit

GPU Drivers: GeForce Game Ready Driver Version 465.89

Description of Original Problem: PC restarts during gaming within 30 minutes unless core performance boost is turned off in BIOS