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Mix different types of RAM? watch

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    At the moment my laptop has 256mb of pc2100 ram, but I have been offered a 512mb stick of pc2700 ram off a mate. Will the pc2700 stick work ok at the slower speed to match the existing RAM or is this a bad idea?

    cheers
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    Yeah the RAM will be backwardly compatable with the existing RAM and will just operate at the same speed as the slower stick.
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    (Original post by markkey)
    Yeah the RAM will in theory be backwardly compatable with the existing RAM and will just operate at the same speed as the slower stick.
    99% of the time it'll be fine
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    Yeah I suppose I should have said that.
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    (Original post by stevoboy)
    At the moment my laptop has 256mb of pc2100 ram, but I have been offered a 512mb stick of pc2700 ram off a mate. Will the pc2700 stick work ok at the slower speed to match the existing RAM or is this a bad idea?

    cheers
    The "PCX000" bit just identifys the frequency at which the RAM will run on the FSB. So as long as your motherboard supports it, it should be fine.
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    (Original post by stevoboy)
    At the moment my laptop has 256mb of pc2100 ram, but I have been offered a 512mb stick of pc2700 ram off a mate. Will the pc2700 stick work ok at the slower speed to match the existing RAM or is this a bad idea?

    cheers
    Shouldn't be a problem
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    z0mfg m1x t3h rams?!!11
    r u CRAZY?!1
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    TBH i would probably ditch the 256 and just have the 512 running faster. Assuming your motherboard supports pc2700 anyways

    Up to you though
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    Thanks guys just put it in and it works fine motherboard only supports upto pc2100 so will probably keep the 256
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    the last time i tried to add a stick on RAM i tried to have a 64MB stick and a 256 stick of PC100 running on the same machine and it refused to work.

    Obviously this was a few years ago ("a few") so perhaps there is no longer this problem
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    Out of interest, i have a system which can take upto pc-6400 ddr2 ram.
    I currently have 2 x 512MB ddr2 400 ram. If i installed a further 2 x 1GB ddr2 667 ram in the correct banks, will the new ram run at the higher speed. I ask this because the higher speed ram is actually cheaper than the 400 mhz ram on crucial's website.

    Also, what real increase in performance is there with an increase in speed and loss in latency on a pentium 530 system (chipset is 915g).

    Thx for any help.
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    With DDR2 speed maybe increased but at present latency is actually increased as it takes more cycles to find the memory.

    You wont be able to mix DDR and DDR2 either you will need to run one or the other.
 
 
 
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