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mobile i5 clock speed monitoring

Discussion in 'General Hardware' started by wolf, Aug 9, 2010.

  1. wolf

    wolf Performance Enthusiast

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    I recently purchased a HP Pavilion DV6-3030TX, specs as follows;

    Core i5 540M
    2x2gb DDR3 1066mhz
    ATi M5650

    when I set the power plan to high performance in windows, the chip seems to permanently clock itself beyond the sticker speed if the thermal headroom is availiable (also researched this)

    sticker speed is 2.53ghz, max turbo clock for both cores loaded is 2.93ghz and single core loaded is 3.06ghz, and from looking at CPU-Z a hec-of-a-lot I've never seen it drop below 2.80ghz.. but the weird thing is my gadgets and various other palces in windows allways report the sticker speed even when CPU-Z shows higher;

    [​IMG]

    however when the clock speed drops the gadgets etc reflect the actual speed;

    [​IMG]

    essentially I'm wondering where CPU-Z pulls the clock speed from, is it 100% reliable when it shows 2.80-3.06ghz? or is the rest of windows right in saying the speed is only 2.53ghz

    not the most interesting question I know, it's more that I'm curious to know if this chip is indeed pretty much permanently clocking itself considerably faster than the sticker speed, cos if so thats pretty awesome, given the thermal headroom does seem to always be there even with both cores full loaded... also what is max temp on a mobile i5?

    cheers TPU :toast:
     
  2. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    here is what I see.

    In CPUz it is showing turbo in the first image. The second image is showing speed step. Both images show Everest reading its stock clocks with no variation.
     
    wolf says thanks.
  3. wolf

    wolf Performance Enthusiast

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    yeah depending on what I look at sometimes its always stock, sometimes it follows speedstep, sometimes it follows turbo mode.... I'd like to assume CPU-Z is always showing the ACTUAL speed, just want some confirmation on that, and maybe a reason why these other gadgets and apps dont know the 'actual' speed.
     
  4. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    CPUz is the reliable one between it and everest.
     
    wolf says thanks.

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