Processors

[robot468]

Config:

PSU 1kW Gigabyte

MB: gigabyte x670 aorus elite

CPU: 7900x3d 

Cooler: DEEPCOOL LE720

RAM: Kingston FURY Renegade Silver [KF564C32RSK2-32] 32 ГБ

I built a new system a week ago, updated the bios, installed the XMP-1 profile (6400-32), set the PBO to (80 Level 3) and started using it. It was stable.

After 3-4 days I noticed the first hangs, ran a stability test in OCCT. Cpu core errors were detected.

I did a full memtest86 test (with XMP-1 profile) - no errors.

Then I reset bios settings to initial values (Load optimized defaults) and started testing CPU cores.

It was found out that core #7 (the fastest) stably starts to generate errors after 5 minutes of load.

https://imgur.com/a/VIOYZjF

I added +4 to this core with Curve Optimizer. Now everything stable, even with XMP. 

Is my CPU degraded because of the PBO? Should i RMA this cpu?

[johnnyenglish]

Very unlikely, PBO is still bound to rules and limitations.

Unless you go all in with board tweaks and somewhat nullify the safeguards. Even so it would take quite a while to degrade if you know what your doing. Its not like you are putting over 1.5v constantly without knowing.

Monitor your CPU with some tools just to be sure and keep track of the averages and peaks.

Also, Curve Optimizer will undervolt as well.


With 6400 on that ram, be sure to check what voltage is being applied to CPU SoC.

Good Luck

[robot468]

Thanks for answer.

Core voltages not exceed 1.380v in any CPU loads.

SOC voltage is 1.250 with XMP and 1.025 with stock memory settings.