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Thread: I think its bad memory...But?




  1. #1
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    Default I think its bad memory...But?

    Greetings,

    I was wondering if one of you smart folks could help me with an instability problem. I have the ep45t-ud3p with 4g Corsair cmx 8500c5 dominators and intel e8500 cpu. Have had the setup for over a year and it has worked great until about 3 weeks ago. I started having random problems-blue screens, freezes, application hangs. Most of the faults appear to relate to memory but not always. I have memtested with v2.11 and now with v4.00 but the results are far from consistent. Immediately after a crash I will get thousands of errors but other times the memory will test fine. This when testing both sticks at the same time. I have tested each stick seperately and have yet to get an error that way but I have only let it run a few passes. I have deleted and reinstalled all network, audio and graphics drivers. Bio is F7 currently set to optimized defaults. I am right now testing one stick in mem86+ on the 3rd pass with no errors. The instability might happen after a day, an hour a minute...no real pattern. Here's why I think memory. I dont have another board to test them in but I do have a spare 4g set of Crucial dimms that I picked up along the way. They are 1066 as well but spec at 7-7-7-24 at 1.8v. When I run the rig with those installed... all good. Very stable. No errors. I've also run Prime 95 overnight twice with the Corsairs. Passed once-failed once after 4 hours--rounding error.
    I would love to hear what ya'll might think. Also any advice for bios setup. Wish I could tell more but that's all I can think of.

    Thanks
    John

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: I think its bad memory...But?

    Well it could be a bad stick, or just incorrect settings, or a incompatibility, since your Crucials works that only means those settings may be closer to correct is all.

    If you want to continue using your Corsair's then please give me a link to them, and fill out a template from my signature with your full settings you try with those sticks and I will advise back.

  3. #3
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    Default Re: I think its bad memory...But?

    Attached is the filled out template. Thanks for helping

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: I think its bad memory...But?

    Thanks, Please try these changes

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 9x
    Fine CPU Clock Ratio.....................:.+0.5
    CPU Frequency ...........................: 3.16 Hz( 333x9.5)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: Disabled
    CPU Host Frequency (Mhz) ............: 333
    PCI Express Frequency (Mhz) .........:100

    C.I.A.2 .................................:Disabled


    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800mV
    PCI Express Clock Drive.................: 900mV
    CPU Clock Skew (ps)....................: 0ps
    MCH Clock Skew (ps)...................: 0ps


    DRAM Performance Control
    Performance Enhance...................: Turbo << Set Standard
    Extreme Memory Profile (X.M.P.).....: DO NOT SEE THIS OPTION IN BIOS
    (G)MCH Frequency Latch...............: Auto
    System Memory Multiplier ..............:Auto << set 3.20B for 1066Mhz
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: Auto << manual

    Standard Timing Control
    CAS Latency Time........................7 Auto NOTE: I have the Crucial dimms installed and this is spec
    tRCD .........................................7 Auto
    tRP'...........................................7 Auto
    tRAS..........................................24 Auto

    Set all Suggested below to highest Values first. Then later you can lower, one at a time, testing as you go

    Advanced Timing Control
    tRRD...........................................4 Auto
    tWTR..........................................4 Auto
    tWR............................................8 Auto
    tRFC...........................................68 Auto
    tRTP...........................................4 Auto
    Command Rate (CMD) ....................:0 Auto << Set 2T for now, can try 1T later

    Driving Strength Profiles
    Driving Strength ............................Auto << Set to 1066 if you can, some boards do not allow this to change

    Channel A
    Static tRead Value.........................:10 Aoto << Set to 9-10 manually for now
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:8 Auto
    Twr2wr(Different Rank)...................:8 Auto
    Twr2rd(Different Rank)...................:9 Auto
    Trd2wr(Same/Diff Rank)..................:9 Auto
    Dimm1 Clock Skew Control...............:Auto
    Dimm2 Clock Skew Control...............:Auto

    Channel B
    Static tRead Value.........................:10 Auto << Set to 9-10 manually for now
    tRD Phase0 Adjustment...................:0 Auto
    tRD Phase1 Adjustment...................:0 Auto
    tRD Phase2 Adjustment .................:0 Auto
    tRD Phase3 Adjustment..................:0 Auto
    Trd2rd(Different Rank)....................:8 Auto
    Twr2wr(Different Rank)...................:8 Auto
    Twr2rd(Different Rank)...................:9 Auto
    Trd2wr(Same/Diff Rank)..................:9 Auto
    Dimm1 Clock Skew Control...............:Auto
    Dimm2 Clock Skew Control...............:Auto

    Motherboard Voltage Control

    CPU
    CPU Vcore….……….........................:1.25000V Auto

    CPU Termination…..... 1.200V*.......: Auto << 1.225-1.25 could help here

    CPU PLL…………………....1.500V*.......: Auto

    CPU Referen.…………....0.755V*.......: 0.760V Auto

    CPU Reference2………,,0.800V*.......:I DONT HAVE THIS OPTION IN BIOS

    MCH/ICH
    MCH Core…………….....1.100V...........: Auto << Set to 1.2-1.28 for 4GB
    MCH Reference….…….0.760V...........; Auto
    MCH/DRAM Ref.…......0.900V...........:Auto
    ICH I/O……………….....1.500V............: Auto
    ICH Core…………...……1.100V............: Auto

    DRAM
    DRAM Voltage ……....1.800V............: Auto << Set to ram spec found on sticker or SPB tab of CPU-z (I assume both differ) 1.7-1.8 likely
    DRAM Termination .…0.900V............: Auto
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto

    Advanced Settings
    Limit CPUID Max. to 3.....................: Disabled
    No-Execute Memory Protect............: Enabled
    CPU Enhanced Halt (C1E)................: Disabled
    C2/C2E State Support....................: Disabled
    x C4/C4E State Support..................: Disabled
    CPU Thermal Monitor 2(TM2) ...........: Enabled
    CPU EIST Function.........................: Disabled
    Virtualization Technology................: Disabled

    Integrated Peripherals
    Legacy USB Storage Detect ..............Disabled

  5. #5
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    Default Re: I think its bad memory...But?

    Thanks for such a quick reply. One question.
    I assume these setting would be good for either set of rams I have with the exception of voltage. The crucials want 1.8V but the corsairs want 2.1v. All other settings would be good for either?

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: I think its bad memory...But?

    Well maybe, look at the stickers or specs for each as they may have different timings. I do suggest you set the main timings manually. I just left it on what you had and Auto because I was not sure which set you would be using.

    Set the Main timings per spec for whichever kit, and then yes adjust the voltage per spec for each kit as well, the rest would be fine for either

  7. #7
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    Default Re: I think its bad memory...But?

    I'm Thinking it's gotta be the Corsair memory. After using the Crucials for 3 days with no problems I put the Corsairs back in. Settings are as you directed. Everything OK for about 36 hrs then the errors started. It started with application hangs, (IE Explorer hang, Steam game freezing). Then about 20 errors in service control manager. Different things not starting or timing out. Then Windows Explorer wouldn't respond. Then Event Viewer wouldn't respond. Then shut down wouldn't work resulting in a black screen. Shut it down with the off switch.

    I haven't tried to boot back to Windows yet but I did run Memtest86+. 3 passes and got 24 errors in test #5 but only on the first pass. 2nd and 3rd passes-no errors. Don't know if that's significant or not. In the past when crashes would result in a blue screen memtest would show thousand of errors with both stick in. After testing them seperately and never finding errors, I would put both back in and usually no errors...Weird...Maddening

  8. #8
    Lsdmeasap's Avatar
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    Default Re: I think its bad memory...But?

    IF you want, give me the full settings you are trying with the Corsairs and I will advise back a few changes you could try, but ya they could be faulty or going that way, or just slightly incompatible

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