Intel i9 13900K and 14900K CPU's

andyrpsmith wrote on 7/27/2024, 7:53 AM

Just in case you are not aware there is an issue with i9 (and to a lesser extent other Intel CPUs are failing due to high core voltage being requested by the CPU). This is seen by the user as PC crash and or messages that you have run out of Vram when clearly you have not. If you get to the stage of crashing often it is likely your CPU is permanently damaged and will need to be replaced by Intel.

You may or not be aware that all motherboard MFR's have released an interim BIOS update to keep the CPU within Intel limits and you are recommended to update your MB BIOS now (most BIOS updates have been posted in July so check). The BIOS update is likely to say "Updated with microcode 0x125 to ensure eTVB operates within Intel specifications"

Intel are releasing a code update via MB manufacturers in mid August but this will not repair damaged CPUs only stop CPUs from requesting excessive core voltages from the motherboard.

Any overclocking is likely to hasten the death of the CPU. Any Vcore voltage at 1.5V or above is considered high and best keep Vcore below 1.45V.

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Comments

john_dennis wrote on 8/15/2024, 12:49 PM

I updated my BIOS to 2504 this morning and accepted the defaults long enough to see what was happening.

Here is a screenshot showing that Intel/ASUS appears to be controlling at the maximum temperature.

It's pointless for me to run benchmarks since I have a profound techno-philosophical issue with the concept of running core temps at the boiling point of water. I'll be offline while I plug in my control scheme.

john_dennis wrote on 8/15/2024, 1:26 PM

I observed a reduction in the "predicted" voltage from the original BIOS to the last one.

Rich Parry wrote on 8/15/2024, 2:35 PM

Thank you for your insight and comments. Going to wait a see a little longer.

andyrpsmith wrote on 8/15/2024, 4:22 PM

Rich, you should update your BIOS to include the micro code 129 update as soon as possible as it stops the CPU asking for Core Voltages above 1.55V (this includes voltage spikes above 1.55V). The longer you leave it the greater the risk of CPU damage.

andyrpsmith wrote on 10/14/2024, 12:52 PM

Heads up for the final update code via BIOS update in case you missed it. It is the Intel microcode 0x12B to address elevated voltage requests during idle or light activity, further mitigating Vmin Shift instability issues.
Intel say they now consider the issue resolved in saving CPUs that have not been damaged by the issue. Your warranty has been extended to 5yrs and failed CPUs can be exchanged within this extended warranty.

bitman wrote on 10/17/2024, 3:30 AM

@andyrpsmith Thanks! I got me the final BIOS fix for the intel issue for my motherboard, not sure there were any additional fixes from the aorus master z690 beta builds (f29d, f29d) I had already installed, but this one is brand new and not beta (f29) anymore...

RogerS wrote on 10/17/2024, 6:22 AM

I'm still waiting for MSI to issue this for their z690 boards, we only got the 129 update so far.

andyrpsmith wrote on 10/17/2024, 7:15 AM

Yes I checked the MSI site, poor customer support I would say. So far I have not noticed much difference in core voltage for desk top use. The max voltage I have seen (i91300K) is 1.440V. I decided to go with performance setting rather than the default extreme (which allows a higher current). CPU still boosts to 5.8GHz and power stays within 253W max.

john_dennis wrote on 10/17/2024, 10:00 AM

Checked ASUS site this morning for my motherboard and 0x12B is still in beta.

Version 2602 Beta Version 13.49 MB 2024/09/27

1.Updated with Intel microcode 0x12B to address elevated voltage requests during idle or light activity, further mitigating Vmin Shift instability issues.
2.The option to disable C1E in the BIOS has been removed to ensure it remains enabled, reducing processor stress and maintaining stability per Intel's recommendation.

Updating this BIOS will simultaneously update the corresponding intel ME to version 16.1.30.2307.
Please note after you update this BIOS, the ME version remains the updated one even if you roll back to an older BIOS later.
Before running the USB BIOS Flashback tool, please rename the BIOS file (PAZ790CW.CAP) using BIOSRenamer.