Why two CPU frequencies (clock speeds) are shown on system property of AN515-31?

I_am_Arya
I_am_Arya Member Posts: 18

Tinkerer

edited November 2023 in 2018 Archives
The system property of my AN515-31 shows two CPU frequencies (clock speeds) viz. 1.8 GHz and 1.99 GHz (screenshot attached).
As per the specification sheet of intel the clock speed of the CPU i7-8550U is 1.8 GHz with turbo boost upto 4 GHz.
I have no idea how the 1.99 GHz clock speed came up. I haven't done anything to overclock the CPU or to increase its performance.
If anyone knows how is it possible please let me know.

Best Answers

  • I_am_Arya
    I_am_Arya Member Posts: 18

    Tinkerer

    edited September 2018 Answer ✓
    I_am_Arya said:
    The system property of my AN515-31 shows two CPU frequencies (clock speeds) viz. 1.8 GHz and 1.99 GHz (screenshot attached).
    As per the specification sheet of intel the clock speed of the CPU i7-8550U is 1.8 GHz with turbo boost upto 4 GHz.
    I have no idea how the 1.99 GHz clock speed came up. I haven't done anything to overclock the CPU or to increase its performance.
    If anyone knows how is it possible please let me know.
    These two frequencies are generally shown for the processors that support cTDP (Configurable Thermal Design Power).
    The first frequency is the base frequency at TDP of the processor which is programmed at manufacturing by Intel.
    The second frequency is the highest supported cTDP point frequency and is shown along-with first frequency as it is generated based on a Microsoft algorithm using certain hardware and BIOS parameters.
    The two frequencies will mismatch if the processor supports a cTDP point higher than the base TDP.
    The two frequencies will match if the processor does not support a cTDP point higher than the base TDP.
    I got this info from an old technical advisory document by Intel linked here.
    To learn more about TDP you can read the Wikipedia article on it linked here. It is explained lucidly in that article.
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,311 Trailblazer
    Answer ✓
    In fact I already knew about the ctdp! What I did not know is that the second processor speed shown in the system properties referred to ctdp!
    Thank you very much for showing this information!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
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                                                     egydiocoelho Trailblazer
     
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Answers

  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,311 Trailblazer
    edited September 2018
    Isso não é problema! A maioria aparece assim: O
    Imagem relacionada
    meu parece assim:

    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • I_am_Arya
    I_am_Arya Member Posts: 18

    Tinkerer

    Isso não é problema! A maioria aparece assim: O
    Imagem relacionada
    meu parece assim:

    You are right.
    There is no problem indeed.
    But I digged in deeper and came to know about the reason for these two frequencies.
  • I would also like to know the reason for being shown two frequencies!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • I_am_Arya
    I_am_Arya Member Posts: 18

    Tinkerer

    edited September 2018 Answer ✓
    I_am_Arya said:
    The system property of my AN515-31 shows two CPU frequencies (clock speeds) viz. 1.8 GHz and 1.99 GHz (screenshot attached).
    As per the specification sheet of intel the clock speed of the CPU i7-8550U is 1.8 GHz with turbo boost upto 4 GHz.
    I have no idea how the 1.99 GHz clock speed came up. I haven't done anything to overclock the CPU or to increase its performance.
    If anyone knows how is it possible please let me know.
    These two frequencies are generally shown for the processors that support cTDP (Configurable Thermal Design Power).
    The first frequency is the base frequency at TDP of the processor which is programmed at manufacturing by Intel.
    The second frequency is the highest supported cTDP point frequency and is shown along-with first frequency as it is generated based on a Microsoft algorithm using certain hardware and BIOS parameters.
    The two frequencies will mismatch if the processor supports a cTDP point higher than the base TDP.
    The two frequencies will match if the processor does not support a cTDP point higher than the base TDP.
    I got this info from an old technical advisory document by Intel linked here.
    To learn more about TDP you can read the Wikipedia article on it linked here. It is explained lucidly in that article.
  • Thank you!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :) 
  • I_am_Arya
    I_am_Arya Member Posts: 18

    Tinkerer

    Thank you!
    It's my pleasure to help an ACE user of the community.
    The forum runs smoothly due to quality contribution from ACE users like you.
    Keep up the good work :)
  • Commodore_1995#
    Commodore_1995# ACE Posts: 98,311 Trailblazer
    Answer ✓
    In fact I already knew about the ctdp! What I did not know is that the second processor speed shown in the system properties referred to ctdp!
    Thank you very much for showing this information!
    Oi! Eu não sou sou a cortana! Mas estou aqui para ajudar! Hi! I'm not the cortana! But I'm here to help!
    Se você gostou da minha resposta, marque como solução clicando em sim! If you liked my answer, mark it as a solution by clicking on yes!
    Aceite somente a resposta que ajudou a solucionar o seu problema! Please accept only the response that helped to solve your problem!
    Detection tool click here to find the serial number or partnumber of your model!                                                          
                                                      
                                                     egydiocoelho Trailblazer
     
    ProductKey clique aqui para descobrir o serial do windows! click here to discover the windows serial!
    Para usuários da comunidade inglesa, espanhola, francesa e alemã, usarei o google tradutor! :)
    For users of the English, Spanish, French and German community, I will be using google translator! :)