Memory Tech Question

Discussion in 'General Technical' started by PorPorMe, May 8, 2008.

  1. PorPorMe

    PorPorMe

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    Location:
    Spokane, WA
    First off,specs:

    Athlon XP 2400+
    Epox 8k5A2+
    GeForce Nvidia 7600GS AGP
    PowerMagic 350w PS
    Sony Dru-84A DVD-Burner
    CD-4x4x32 CD-Burner

    At the moment, I'm back to XP Pro SP3.

    I ranforabout 2yrs on XP with 1GB of PC2100 DDR DIMMS configured so:1x512MB/PC2100_2x256MB/PC2100 and XP was happy. I installed Vista Ultimate and it grunted a bit so I ordered a 1GB PC2100 chip online. It arrived and I installed it.

    Configuration is now this:1GB 1st bank-512MB 2nd bank-256Mb 3rd bank.

    Now to the techy stuff. During the day, my machine would die. No warning, no shutting down, dead. Sometimes it would boot right back up, sometimes not. When it wouldn't, the post codes would not read either. My best guess was (with my limited knowlege) was it had to be memory related. I pulled the 256MB chip and then booted to a disk with Windows Memtest v3.3. All tests passed.(Ithink this problem was just poor contact with one or more of the chips.)Fired Vista up, and ran Everest Ultimate. Surprise!!

    FieldValue
    Memory Module Properties
    Serial NumberNone
    Module Size1 GB (2 ranks, 4 banks)
    Module TypeUnbuffered
    Memory TypeDDR SDRAM
    Memory SpeedPC3200 (200 MHz)
    Module Width64 bit
    Module VoltageSSTL 2.5
    Error Detection MethodNone
    Refresh RateReduced (7.8 us), Self-Refresh

    Memory Timings
    @ 200 MHz3.0-3-3-8 (CL-RCD-RP-RAS) / 11-14-2 (RC-RFC-RRD)
    @ 166 MHz2.5-3-3-7 (CL-RCD-RP-RAS) / 10-12-2 (RC-RFC-RRD)
    @ 133 MHz2.0-2-2-6 (CL-RCD-RP-RAS) / 8-10-2 (RC-RFC-RRD)

    Memory Module Features
    Early RAS# PrechargeNot Supported
    Auto-PrechargeNot Supported
    Precharge AllNot Supported
    Write1/Read BurstNot Supported
    Buffered Address/Control InputsNot Supported
    Registered Address/Control InputsNot Supported
    On-Card PLL (Clock)Not Supported
    Buffered DQMB InputsNot Supported
    Registered DQMB InputsNot Supported
    Differential Clock InputSupported
    Redundant Row AddressNot Supported

    The Epox mobo will only support up to PC2700. XP PRO SP3 is running fat an sassy on this 1GB PC3200. How? Was the combination of PC3200 and PC2100 the problem? Is leaving this PC3200 chip in going to be a problem?
     
    PorPorMe, May 8, 2008
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  2. PorPorMe

    MafiaLord91

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    I don't think it should be a problem as your motherboard should underclock your memory speed.
     
    MafiaLord91, May 9, 2008
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  3. PorPorMe

    PorPorMe

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    That iswhere my research has got me too.

    Looking at the 512GB PC100 it will run at @ 133 MHz @ 100 MHz. So now I'm running the 1GB PC3200 along with the 512MB PC2100 and everything seems fine. I think the crash problem was a bad seat on one of the memory chips. A slight bump or anything else and BAM-down she went. That seems to have resolved itself during this process. Thanks.
     
    PorPorMe, May 10, 2008
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