Processors
Processors (Intel® Core™, Intel® Xeon®, etc); processor utilities and programs (Intel® Processor Identification Utility, Intel® Extreme Tuning Utility, Intel® Easy Streaming Wizard, etc.)
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Why my CPU never work on the maximum multiplier

Singham_Ainda
Beginner
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I have Intel Core i5 9400F installed on my system. I found that it never works on the maximum x41 multiplier. IIsee the following when CPU-Z benchmark is running:

IItMd.png

Can I force it to work on the maximum speed, does it depend on the system / BIOS configuration?

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n_scott_pearson
Super User Retired Employee
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The clock multipliers that the individual cores can reach is based upon a whole slew of factors, primarily including the number of cores active and the overall thermal headroom available. The BIOS defines the maximum clock multiplier that will be used by the active cores based upon the number of cores that are actually active. Some BIOS make this table available for modification and some don't. If you cannot find these configuration parameters within your system's BIOS, you will need to discuss this with your motherboard/system manufacturer.

For more information on the Turbo Boost feature, you can consult these sources (amongst others):

What is Intel Turbo Boost Technology and How Does it Work?

Why Am I Not Getting the Intel Turbo Boost Frequency?

My Intel Core Processor Does Not Reach the Maximum Turbo Boost Frequency

Frequently Asked Questions for Intel Turbo Boost Technology

Frequently Asked Questions About Temperature for Intel Processors

Hope this helps,

...S

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