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    Ram under clocked

    Discussion in 'Alienware M11x' started by JakeL645, Jul 22, 2010.

  1. JakeL645

    JakeL645 Notebook Consultant

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    According to the dell site it says this "4GB (2X2GB) 1333MHz DDR3 SDRAM (1333MHz Memory operates at 800MHz)"

    Any idea how to set it to the original clock? It says this for all options by the way.
     
    JakeL645, Jul 22, 2010
    #1
  2. looking4pftnb

    looking4pftnb Notebook Consultant

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    you can't because of cpu bandwidth
     
    looking4pftnb, Jul 22, 2010
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  3. surfxombie

    surfxombie Notebook Evangelist

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    The speed is set by the FSB speed and multiplied up depending on a ratio.
    The default runs the memory at 800Mhz.

    To change this you need to change the FSB &/or the ratio.

    I don't have an M11x yet so can't say what the bios allows but it seems you can just OC the CPU, which is probably FSB based. So that may up the speed of the RAM.

    If on the other had the CPU OCing is multiplier based or the RAM speed is set so it auto changes the ratio to get 800MHz, then the memory speed will not change.

    So.. OC and see what CPUz says.

    Also check out this thread which was started on an R2.
    cpu-z-shows-faster-dram-frequency-while-cpu-ocd
     
    surfxombie, Jul 22, 2010
    #3
  4. erawneila

    erawneila Company Representative

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    This is a limitation of the ULV processor...
     
    erawneila, Jul 22, 2010
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  5. JakeL645

    JakeL645 Notebook Consultant

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    sadface :(
     
    JakeL645, Jul 22, 2010
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  6. MaxGeek

    MaxGeek Notebook Evangelist

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    Memory clock speed does not have a significant impact on performance, just bragging rights.
     
    MaxGeek, Jul 22, 2010
    #6