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  1. #1
    5 Star Lounger
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    Different versions of RAM

    I have picked up a HP system that uses PC 2100 DDR RAM memory. Can PC 2700 or PC 3200 be used in place of the PC 2100? I know that I am sometimes able to interchange PC 100 for PC 133 in older systems. But not sure if the PC 2100 is interchangeable with PC 2700 or PC 3200?

    Thanks for any input.

  2. #2
    Uranium Lounger
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    Re: Different versions of RAM

    So long as you don't mix different speeds of memory in the same motherboard, then you should be able to do so. The higher rated memory is certified to run at those higher speeds so by inference it should also operate at a lower speed.

    However, I would strongly recommend that you get the speed of RAM that the motherboard is rated to support, because you may encounter odd problems relating to the timing of the memory chips. This was true in PC 133/100/66 memory types as well and although it is uncommon, it is still better to stick with the specs - unless you like troubleshooting!
    -Mark

  3. #3
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    Re: Different versions of RAM

    Hi Mark,

    While on the subject of RAM... a friend has a motherboard that supports both PC100 and PC133. He only had 128mb of RAM and wanted to upgrade. He was not able to determine the exact speed of the existing memory module and I arranged to get him a PC133 256mb module. If the original module is really a PC100 unit and he adds the PC133 unit will the system fail or cause any problems?

    Thanks in advance for any input.

    Cheers, Bob

    P.S. I did have him run Belarc and Everest on his beast and in his case, the speed of the existing module could not be found or determined.
    Regards,
    Bob

  4. #4
    Uranium Lounger viking33's Avatar
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    Re: Different versions of RAM

    Bob,
    The word is that it will run OK but at the slower 100 speed. <img src=/S/bingo.gif border=0 alt=bingo width=15 height=22>
    BOB
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    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  5. #5
    Uranium Lounger
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    Re: Different versions of RAM

    If you end up mixing 133 with 100 on the same motherboard, it will probably run - but expect random blue screens and other odd problems. Windows 9x is also a lot more forgiving of such things; Windows 2000/XP will give you a hard time of it if they boot at all.
    -Mark

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