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  1. #1
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    Dell GX1 RAM speed

    I bought a Dell computer with a GX! mainboard, 450MHz PII processor and 64 MB 66 Mhz SDRAM DIMM memory chip. I put in a 100 MHz SIMM and the computer no longer ran. But I see no jumpers on the motherboard, I have no manual, and I can't find the information on the Dell site. The chipset should support 100 MHz RAM...can anyone help?

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    Re: Dell GX1 RAM speed

    Here's the specs:

    http://support.jp.dell.com/docs/syst..._gx1/specs.htm

    it should take the 100 mhz chips (non-ECC SDRAM)
    Mike Wolfman
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  3. #3
    Uranium Lounger
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    Re: Dell GX1 RAM speed

    You put in a SIMM or a DIMM? Or did you add the SIMM to the existing configuration?

    Also, you are not mixing memory speeds, I hope - that alone would cause the problem you are having. All memory sticks have to be identical in speed and type to make the machine stable.
    -Mark

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    Re: Dell GX1 RAM speed

    I know it should take 100 MHz SAM-- the question is how to make it recognize them, as I can find no jumpers and don't have the manual. The computer won't boot with the 100 MHz RAM, so the setting can't be in the BIOS, it pretty much has to be in hardware.

  5. #5
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    Re: Dell GX1 RAM speed

    The critical thing to remember is not to mix different speeds of memory, say 66 and 100 - if the computer boots at all under such circumstances it will crash unexpectedly and just be plain old flakey. But I did manage to dig up your documentation from Mike's link...
    <UL><LI>Dell Optiplex GX1 Systems
    <LI>Revision 2 of the GX1 jumper settings[/list]According to the document above you need to cap the jumper BUS66M. If after that the computer still is not starting with the 100MHz stick(s) installed, try changing slots. If you still get nowhere, exchange the memory and try a new stick to ensure that you did not end up with a faulty module.

    Hope that helps...keep us posted.
    -Mark

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