What changes/improvements are in new 13/14th Gen Raptor Lake microcode 0x12C

[arlicht]

Hi,

Can someone from Intel here list a changes or improvements made to new CPU microcode 0x12C which is now rolling out to 13/14th gen Raptor Lake? 

Does new 0x12C microcode related to Intel Raptor Lake instability new fixes or its some other or its just new vulnerability security fix update?

Why Intel not released any official statement on 0x12C?

[DeancR_Intel]

Hi arlicht

Thank you for posting in the Community.

At this time, there isn't specific information available about the 0x12C microcode update. To assist you better in the meantime, could you please provide some additional information about your setup? Specifically, I would like to know:

• Motherboard Model: This will help us understand the compatibility and any specific updates related to your hardware.
• Any Specific Issues or Improvements Noticed: If you've observed any changes in system performance or stability, please let me know, as this can provide valuable context.

Best regards, 

Dean R. 

Intel Customer Support Technician 

[arlicht]

How official intel answer can be like "we dont know what this microcode is"?

If this is your product and its Intel microcode which was officialy released to motherboard vendors then you should provide what changes it makes.

Can you please ask someone in Intel who can explain what is 0x12C microcode and provide at least minimal information regarding what changes/improvements/fixes are made compared to previous 0x12B microcode.

[DeancR_Intel]

Hi arlicht

I apologize for any frustration this may have caused. I appreciate your patience, and I want to assure you that I will investigate this matter more thoroughly internally regarding the 0x12C microcode. I will reach back to you once I have the necessary information.

Best regards, 

Dean R. 

Intel Customer Support Technician 

[DeancR_Intel · Accepted solution]

Hi arlicht

Thank you for your patience and I wanted to provide you with some clarity regarding the recent microcode updates and their relation to Vmin Shift Instability.

The last microcode fixes specifically addressing Vmin Shift Instability was version 0x12B. Subsequent releases, including 0x12C, have focused on other changes and do not contain updates related to Vmin Shift. Version 0x12C is part of a formal, regular, routine release cycle and does not address the instability issue.

Regarding your question about why Intel has not released an official statement on 0x12C, it's important to note that since there are no significant changes related to the instability issue, updates are communicated through OEMs on their respective download pages. This approach ensures that users receive relevant information directly from the source of their hardware.

I understand how crucial it is to have clear and timely information about updates, and I appreciate your patience and understanding. If you have any further questions or need additional assistance, please feel free to reach out.

Best regards, 

Dean R. 

Intel Customer Support Technician 

[DeancR_Intel]

Hi arlicht

Thank you for your patience and understanding regarding the recent microcode updates and their relation to Vmin Shift Instability. I've noticed that you marked the reply as a solution—is that correct?

If there are any remaining issues or questions that have not been fully addressed, please feel free to reach out. Otherwise, if everything has been clarified to your satisfaction, I will proceed with closing this thread.

Best regards, 

Dean R. 

Intel Customer Support Technician 

[Nicolas1031]

Quisiera saber si los problemas con el procesador i7 13700h ya se resolvieron , ya que no estoy seguro de comprarlo si yodavia tienen problemas

[JeanetteC_Intel]

Hello Nicolas1031,

Tenga en cuenta que solo puedo ayudarlo en inglés. Utilicé una herramienta de traducción web para traducir esta respuesta, por lo que puede haber algunas traducciones inexactas. A partir de ahora, te responderé en inglés.

While your concerns may be related to this thread, I kindly ask that you create a new thread for your case. This will enable us to concentrate on your specific issue and offer more effective assistance.

Sincerely,

JeanetteC.

Intel Customer Support Technician

[JayPrakash]

hi,

As usual, Intel Tech spitting out BS. Why not just tell the truth you fruit cakes. Here's what i have found.

--------------------------------------------------------------------------------------------------------------------------

Microcode update 0x12C, released in late March 2025, focuses on addressing issues related to the eTVB algorithm and high voltage requests by the processor, specifically for Intel's 13th and 14th generation CPUs. 

Here's a more detailed breakdown:

• Focus of the Update:

  Microcode 0x12C, released in late March 2025, addresses issues related to the eTVB algorithm and high voltage requests by the processor, specifically for Intel's 13th and 14th generation CPUs. 
• What it fixes:

  • eTVB Algorithm Issue: Microcode 0x125 (June 2024) addressed an issue with the eTVB algorithm, where the SVID algorithm was requesting high voltages at a frequency and duration which could cause Vmin shift. 
  • High Voltage Requests: Microcode 0x129 (August 2024) addressed high voltages requested by the processor. 
• How to find the microcode version:

  • You can check the microcode version on your CPU using the Intel® Processor Identification Utility, which can be found under the CPUID DATA tab of the tool. 
  • The microcode version is listed in the CPUID DATA section and is called CPU Revision. 
• Why update:

  These updates provide bug fixes that can be critical to the stability of your system. Without them, you may experience spurious crashes or unexpected system halts. 

[Galixte]

What is the source of this changelog?

[JeanetteC_Intel]

Hello Galixte,

Thank you for posting in Intel Communities.

I kindly request that you create a new thread for your query. This will allow us to focus on your specific questions/concerns and provide you with better assistance.  

Sincerely,

JeanetteC.

Intel Customer Support Technician

[JeanetteC_Intel]

Hello JayPrakash,

I appreciate your insights about this however, the information we have provided is all we can share at the moment, as updates are communicated through OEMs on their respective download pages. I kindly request that you create a new thread in case you have any issues or concerns with Intel products. This will allow us to focus on your specific problem and provide you with better assistance.  

Sincerely,

JeanetteC.

Intel Customer Support Technician

[DeancR_Intel]

Hi arlicht

This is acknowledged, I will look thorough internally regarding this concern, and I will get back to you once I have the necessary information you need.

Best regards, 

Dean R. 

Intel Customer Support Technician