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Thread: Memtest Results

  1. #1
    Ah, Mrs. Peel! mike_w's Avatar
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    Memtest Results

    I've been having a few problems with my PC - the problems aren't serious, just some things crash that have never crashed before. Prime95 ran fine for a few hours.

    I tried Memtest, and I got some weird results - I have two sticks of 512MB. In one combination, Memtest produces no errors. However, if I swap the sticks around, I start getting errors in Memtest. Does anybody have any ideas why this might be the case? Could it be the RAM causing some of the instability?

    Thanks

    Mike
    "Well, there was your Uncle Tiberius who died wrapped in cabbage leaves but we assumed that was a freak accident."

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    Senior Member skuzgib's Avatar
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    Could it be the DIMM slot?

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    Ah, Mrs. Peel! mike_w's Avatar
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    Quote Originally Posted by skuzgib
    Could it be the DIMM slot?
    How so? I use the same DIMM slots both times, just different sticks of RAM.

    Thanks

    Mike
    "Well, there was your Uncle Tiberius who died wrapped in cabbage leaves but we assumed that was a freak accident."

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    Amateur photographer Hans Voralberg's Avatar
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    Incompatibility between a stick of RAM and one slot ??

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    Test the sticks seperately for errors as it could be stressing the dodgy DIMM less in the other slot.
    .: Predator :.


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    Ah, Mrs. Peel! mike_w's Avatar
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    I have two sticks of RAM - one is TwinMOS, the other is Corsair Value Select.

    After six tests, here are the results:

    -TwinMOS in DIMM 3, Corsair in DIMM 2 No Errors
    -TwinMOS in DIMM 2, Corsair in DIMM 3 Errors
    -TwinMOS in DIMM 3 No Errors
    -TwinMOS in DIMM 2 No Errors
    -Corsair in DIMM 2 No Errors
    -Corsair in DIMM 3 Errors

    So whenever the Corsair Value Select stick is in DIMM 3, Memtest produces errors. Is this Memtest going wrong, or is there something wrong with the Corsair stick?

    Thanks

    Mike
    "Well, there was your Uncle Tiberius who died wrapped in cabbage leaves but we assumed that was a freak accident."

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    Would assume a faulty DIMM slot to me.

    Can you test the memory in another board or ask a friend to test it?
    .: Predator :.


    - Shuttle SN25P - A64 3700+ San Diego @ 2.7GHz - 1GB PQI Ultra DDR - X850XT - Asus DVD-ROM - 200GB Maxtor + 2*80GB SATAII -

  8. #8
    System Suspect
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    Seems very odd that it'd only appear faulty when in slot 3 and not slot 2, there again perhaps there's some minute tollarance issue at work when that particular dimm is in that slott. What happens if you just fire up the PC with that Cosair in Slot 3 and then again with it just in slot 2?

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    • oralpain's system
      • Motherboard:
      • DFI "Blood Iron" P35-T2RL
      • CPU:
      • Intel Pentium E2140 @ 400x8 (3.2GHz), 1.375v
      • Memory:
      • Crucial Ballistix DDR2 800 CL4 @ 500MHz (DDR 1000), 4-4-4-12-T2, 2.3v
      • Storage:
      • 2x Seagate ST3250410AS
      • Graphics card(s):
      • NVIDIA 8800GTS (G92) 512 @ 783MHz core, 1836MHz shader, 1053Mhz memory, stock cooling 70% fan speed
      • PSU:
      • Seasonic SS-500GB
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      • Antec P182, with some small modifications
      • Monitor(s):
      • ASUS VW222U
      • Internet:
      • Time Warner "Road Runner" Cable - 16 megabit downstream, 1 megabit upstream
    I would assume that nothing is (physically) wrong. Generally the farther from the cpu/northbridge you get, or the farther from the terminators/voltage regulators, the worse the signal is.

    On my board, memory at 240Mhz, stick one in dimm1 and stick two in dimm3 work the best. Using any combination of sticks in dimms 1&2 produce errors at this speed, I also get a few errors with stick2 in dimm1 and stick1 in dimm3. My first stick of memory is the weaker of the two so I put it in the best slot. Note that your set up is probbaly different from mine, this is just an example.

    You can try giving the memory more voltage, or changing the memory timings.
    Last edited by oralpain; 05-04-2005 at 08:05 AM.

  10. #10
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    Perhaps the bios detects the default timings from slot 2. If The two sticks aren't rated with the same timings and you put the faster one in slot2 then the other stick will also be set to the same timings.

  11. #11
    Ah, Mrs. Peel! mike_w's Avatar
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    Quote Originally Posted by pudds
    Perhaps the bios detects the default timings from slot 2. If The two sticks aren't rated with the same timings and you put the faster one in slot2 then the other stick will also be set to the same timings.
    Nope, they both have the same timings. I think I'll try the stick in another machine when I get the chance.
    "Well, there was your Uncle Tiberius who died wrapped in cabbage leaves but we assumed that was a freak accident."

  12. #12
    HEXUS.timelord. Zak33's Avatar
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    i think its because the motherboard uses a kind of "buffer" for each slot, and sme "buffers" hate certain memory combos.

    Best answer I can give...but I've had the EXACT same thing mate
    .
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