Dell computer wont accept ram upgrade

Discussion in 'Computer Help' started by Nvidiaguy07, Sep 15, 2009.

  1. Nvidiaguy07

    Nvidiaguy07 Platinum Member

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    I am upgrading memory on an older dell computer from 256mb to 1G.

    I checked the memory before i ordered new memory and saw it was DDR333 so i ordered DDR400 thinking that it would work.

    I have ordered higher rated memory for computers and it worked fine before so why wont this work this time?

    any ideas why this wont work?
     
  2. Billb2

    Billb2 Platinum Member

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    There were major architecture changes between DDR333 and DDR400 memory. You probably got caught in the singlesided vs doublesided fiasco, or maybe the 4 x 256 vs 8x128 bugaboo.

    Your best bet is to return/sell what you have and go to any of the major memory manufacturer's websites and use their "memory configurator" and find the exact memory for that dell model.
     
  3. Nvidiaguy07

    Nvidiaguy07 Platinum Member

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    Damn, i had no idea.

    Thought there was just SDRAM, DDR, DDR2, DDR3 etc. and the speed didnt really matter as long as you werent running it above the rated speed.

    if i find memory on dells website can i still order it through newegg? or would it be too much of a gamble?
     
  4. Nvidiaguy07

    Nvidiaguy07 Platinum Member

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    old memory:
    nanya nt256d64s88b1g-gk
    256mb ddr-333mhz-cl2.5
    pc2700u-25330

    new memory:
    g-skill f1-3200phu1-1gbnt
    ddr1gb pc-3200
    cl3-4-4-8 2.6V-2.75V
     
  5. Billb2

    Billb2 Platinum Member

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    PC2700 memory usually runs on 1.5v

    No. (Dell does not sell their memory on Newegg?????)

    If you could identify all the specs from the Dell website (which you can't), then yes, you could buy the same memory from Newegg or elseware. Dell really doesn't give you enough info to use to shop else ware.

    As I said, other memory sites will spec memory for your Dell. With that manufacturer's part no you could then price shop for that particular memory.


     
  6. pcgeek11

    pcgeek11 Diamond Member

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    Go here:

    http://www.crucial.com/store/drammemory.aspx

    You will get the exact memory guaranteed to work!

    pcgeek11
     
  7. Blunc

    Blunc Senior member

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    you can probly locate the correct part number on the crucial site then see if newegg has the same part for less.
     
  8. Nvidiaguy07

    Nvidiaguy07 Platinum Member

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    so i went to crucial and dells website and they both suggested getting DDR400. It seems that there is no difference in the memory that they are recommending and the kind i bought.

    Could it be that i need to change something in the bios for it to recognize the memory? I took the old stick out so its only running in DDR400 speed.

    If it helps the computer is a dell dimension 2400 with the service tag 3590J41

    this is the memory i bought: http://www.newegg.com/Product/...x?Item=N82E16820231036
     
  9. Lanyap

    Lanyap Elite Member

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    Looks like some 2400s have a problem with this memory. Found this in NE review section. I would return the 1GB and pick up 2 sticks of Crucial 512MB if you only need 1GB.

    http://www.newegg.com/Product/...=&Page=1&Keywords=dell

    I also found a discrepancy in the Dell documentation.


    Memory

    Architecture
    DDR SDRAM

    Memory connectors
    two

    Memory capacities
    128-, 256-, or 512-MB


    Minimum memory
    128 MB shared DDR SDRAM

    NOTE: Between 32 and 64 MB of system memory may be allocated to support graphics, depending on system memory size and other factors.

    Maximum memory
    2 GB


    Memory type
    PC2100 (266-MHz) or PC2700 (333-MHz) DDR SDRAM (non-ECC)

    http://support.dell.com/suppor...400/en/sm_en/specs.htm





     
  10. sivart

    sivart Golden Member

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    Seems there lies the problem. The largest stick of RAM your machine can take is 512MB and you bought a 1GB stick. My guess is your PC has four slots that can hold a maximum of 2GB (across all 4) or 512MB x 4. I can't remember if this Dell machine had a 'small version' with a different mobo or not.

    How many slots do you have, physically?

    If only 2, then there is something wrong with the documentation.
     
  11. techs

    techs Lifer

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    Welcome to my world.
    I regulary update memory in my shop and run into the same problem as you.
    While ddr memory elimated a lot of incompatibilites from sdram along with many manufactures making their motherboards more compatible with "standard" or "generic" memory, you can still run into problems.

    Here's some rules I follow:

    If it came with cas 2.5 memory going to a higher mhz, but a lower cas (as in your case) often fails. Stick with the same cas latency as you already have.

    For major manufacturers like Dell the best bet is to stick with ddr333 and not ddr400 if it came with ddr333.

    If the computer was sold with cpu's and mobo's running at different speeds, e.g. P4's at 333 and Celerons at 266 often the slower mobo busses will not take the max memory listed on a site like Crucial. Companies like Dell go thru different revisions of the mobo and chips on the mobo within the same model like Dimension 2400's. It's a crapshoot which revision Crucial or Kingston etc are basing their recommendation on.

    As was previously posted you can run into the single sided/double sided issue. When in doubt often the sites like Crucial will sell a single sided stick which costs a couple of bucks more, but will work on all or most of the computers in question.

    Lastly, the maximum amount of memory and maximum size per stick are often misreported in manufacturers spec sheets. For the same reason listed above because of mobo revisions. You rarely see a major manufacturer list different memory specs for different mobo revisions. In fact Dell has sold some of my customers incompatible upgrades.