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    Can PC5300 be detuned to PC4200??

    Discussion in 'Toshiba' started by Karl Gruber, Apr 5, 2007.

  1. Karl Gruber

    Karl Gruber Notebook Consultant

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    I've got a Toshiba A135 satellite. I thought PC5300 is backward compatable with PC4200. Turns out it's not. There are hardly any bios options in my Toshiba. I would like to manually turn the memory down to PC4200. Is this possible on my A135?
     
    Karl Gruber, Apr 5, 2007
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  2. Gautam

    Gautam election 2008 NBR Reviewer

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    The general rule is that when pairing two different speed RAM sticks, the slower one will be the limited hardware and speed determiner. You don't manually do anything - it's forced to do it on its own for bottleneck reasons.
     
    Gautam, Apr 5, 2007
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  3. vespoli

    vespoli 402 NBR Reviewer

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    PC5300 should be compatible with PC4200... are you sure that everything else is correct: seated properly, not a dead stick, etc?
     
    vespoli, Apr 5, 2007
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  4. Karl Gruber

    Karl Gruber Notebook Consultant

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    2 brand new sticks. I have 1.5gb worth of memory right now with the correct PC4200 ram. I bought 2 new 1GB sticks of ram. The ram was PC5300 instead of PC4200. I assumed that the ram would only allow my core duo to run at FSB 533. I guess I was wrong. I even tried using one 1GB of PC4200 and one stick of PC5300, but it wouldn't boot.

    Any other suggestions?
     
    Karl Gruber, Apr 5, 2007
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  5. Karl Gruber

    Karl Gruber Notebook Consultant

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    I didn't slide one of the chips in all the way. PC5300 is backward compatable down to PC400. Thanks for your help.
     
    Karl Gruber, Apr 10, 2007
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  6. Karl Gruber

    Karl Gruber Notebook Consultant

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    Wait, nobody helped me. I helped myself. Thank you, myself...
     
    Karl Gruber, Apr 10, 2007
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