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Recommended ACLL/DCLL values for Intel Defaults Profile for 14900K processor?

SmartOne_2000
New Contributor II
817 Views

Hi:

Intel guidance says the AC/DC load line values must be identical for the Intel Defaults Profile (IDP).

In my Asus z690 MCE profile, ACLL = 0.4mOhm and DCLL = 1.1mOhm.

 

What are the Intel's ACLL/DCLL values that were used to test its recommended profile to come to the conclusion that there was hardly a performance hit due to the microcode?

I'm currently getting almost a 20% performance hit between IDP (Extreme) and Asus MCE in Cinebench R23 Multi-threaded tests .... i.e. 35K - 36K (IDP)  and 41K (MCE).

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1 Solution
Earl_Intel
Moderator
531 Views

Hi SmartOne_2000,


Thank you for patiently waiting, to answer your inquiries.


We tested on Intel Raptor Lake Reference Board which the AC LL = DC LL = 1.1mOhm.


Your MCE BIOS is OCed by default and we recommended you use the latest BIOS with Intel Default Settings.


Also note that our performance claim for 0x12B is: Intel’s internal testing comparing 0x12B microcode to 0x125 microcode – on Intel® Core™ i9-14900K with DDR5 5200MT/s memory - indicates performance impact is within run-to-run variation. Both 0x12B and 0x125 are using Intel Default Setting.


Best regards,

Earl E.

Intel Customer Support Technician


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6 Replies
SmartOne_2000
New Contributor II
782 Views

bump...

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Earl_Intel
Moderator
676 Views

Hi SmartOne_2000,

 

Thank you for posting in the communities!

 

I will review the information you provided internally and provide an update on this thread as soon as possible.

 

Best regards,

Earl E.

Intel Customer Support Technician.

 

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Earl_Intel
Moderator
532 Views

Hi SmartOne_2000,


Thank you for patiently waiting, to answer your inquiries.


We tested on Intel Raptor Lake Reference Board which the AC LL = DC LL = 1.1mOhm.


Your MCE BIOS is OCed by default and we recommended you use the latest BIOS with Intel Default Settings.


Also note that our performance claim for 0x12B is: Intel’s internal testing comparing 0x12B microcode to 0x125 microcode – on Intel® Core™ i9-14900K with DDR5 5200MT/s memory - indicates performance impact is within run-to-run variation. Both 0x12B and 0x125 are using Intel Default Setting.


Best regards,

Earl E.

Intel Customer Support Technician


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Earl_Intel
Moderator
443 Views

Hi SmartOne_2000,


I wanted to follow up and see if you've had a chance to review the answer regarding to your inquiry.


Best regards,

Earl E.

Intel Customer Support Technician.


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SmartOne_2000
New Contributor II
418 Views

Yes, Earl. Thank you for the answer. All is good now.

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Earl_Intel
Moderator
269 Views

Hi SmartOne_2000,


Thank you for the confirmation, I will close this inquiry now.


If you need further assistance, please submit a new question as this thread will no longer be monitored.


Best regards,

Earl E.

Intel Customer Support Technician.


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