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    CPU-Z reading

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by davidt1, Apr 22, 2007.

  1. davidt1

    davidt1 Notebook Evangelist

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    My laptop ram is supposed to be 533MHZ. CPU-Z show a maximum bandwidth of 333MHZ. Am I missing something? Shouldn't it show 533MHZ? Any thought? Thanks.
     
    davidt1, Apr 22, 2007
    #1
  2. Greg

    Greg Notebook Nobel Laureate

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    That's actually the speed of the RAM bus. But, your ram is DDR...as in DOUBLE Data Rate. That means that you can run (what is effectively) 667MHz (that is really 333MHz doubled). Hope that makes sense, but there's nothing wrong here :).
     
    Greg, Apr 22, 2007
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  3. Pitabred

    Pitabred Linux geek con rat flail!

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    The 533MHz is a DDR rate, so the actual speed is probably shown as what, 266MHz? Half of the doubled rate, which is what's advertised. CPU-Z is reporting the maximum speed of RAM that can be installed, which is 667MHz, half of which is 333MHz, which is the number that you're seeing.
     
    Pitabred, Apr 22, 2007
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  4. thjt

    thjt Newbie

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    My processor is T7400, why the core speed is just 997.5mhz with 0.95Volt??
    Sometime the Volt go up to 1.2V then it is 2.16Ghz. The multiplier sometime is 6 and sometime is 13. Can somebody explain to me?? Thank You very much
     
    thjt, May 1, 2007
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  5. miner

    miner Notebook Nobel Laureate

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    Nothing to worry about. Its just Speedstep kicking in to reduce your clock speed when the system is idle. As you can see from the CPu-Z reading the system will increase the clock speed based on demand. So, you get max power savings as well as the performance when necessary.
     
    miner, May 1, 2007
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  6. thjt

    thjt Newbie

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    Thank You very much :) :)
     
    thjt, May 1, 2007
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  7. FREN

    FREN Hi, I'm a PC. NBR Reviewer

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    It also depends whether or not you're plugged in. If you have your adapter plugged into a socket, your processor will run at maximum if it's doing something intensively. When you're on battery power, your processor downclocks to save energy.
     
    FREN, May 2, 2007
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