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Thread: Ep35-ds3r unstable with 4 sticks reaper please help!




  1. #1
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    Default Ep35-ds3r unstable with 4 sticks reaper please help!

    I can't get stable with 4 sticks of reaper cl3.
    when use 2 sticks it can run easily at 1050 cl5 2.2v but 4 sticks can't run stable at 1050 cl5 2.2-2.5v.
    I read many thread so I drop speed to 840 cl4 change trfc 54 ,test with OCCT 90 min it show stable.
    But when I test again after 6 hours it show error in 30 min. What is issue? What I do wrong?
    Somebody help me! My com open 24/7.

    my spec
    e6420 (3.36Ghz) +zalman 9700nt
    ep35-ds3r + hr-05(nb) +nb32j(sb)
    ocz reaper pc6400 cl 3-4-4 (4x1GB)
    asus 8600gt
    sb live!
    seagate 320g *2
    dvd+rw *2
    coolmaster 460w+enermax 350w

    in bios
    Robust Graphics Booster___________ [Auto]
    CPU Clock Ratio ____________ [8]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [420]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.00]
    DRAM Timing Selectable_______ SPD __ [Manual]
    Performance Enhance = [Extreme]
    CAS Latency Time________________ 4
    Dram RAS# to CAS# Delay_________ 4
    Dram RAS# Precharge Delay_______4
    Precharge Delay (tRAS)__________ 15
    ACT to ACT Delay (tRRD)_________ 5
    Rank Write to READ Delay________ 11
    Write to Precharge Delay_________ 6
    Refresh to ACT Delay______________ 54
    Read to Precharge Delay__________ 5
    Static tRead Value_______________ 7
    Static tRead Phase Adjust________ [auto]
    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0..4V]
    PCI-E OverVoltage Control_ [+0.1V]
    FSB OverVoltage Control___ [+0.1V]
    (G)MCH OverVoltage Control [+0.2V]
    CPU Voltage Control_______ [1.3750]

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    CAS 3 is not going to work at all much above 800Mhz best to try for CAS 4 or 5. And at 1050 CAS 4 is not going to happen likely either, I would use CAS 5

    Try this >>>

    Robust Graphics Booster___________ [Auto]
    CPU Clock Ratio ____________ [8]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [420]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.00]
    DRAM Timing Selectable_______ SPD __ [Manual]
    Performance Enhance = [STANDARD]


    For 800-900 >>>

    CAS Latency Time________________ 4/5
    Dram RAS# to CAS# Delay_________ 4/5
    Dram RAS# Precharge Delay_______4/5
    Precharge Delay (tRAS)__________ 12/15

    Start With the higher settings, and move lower ONE AT A TIME testing after each move
    ACT to ACT Delay (tRRD)_________ 3-4
    Rank Write to READ Delay________ 9-11
    Write to Precharge Delay_________ 3-5
    Refresh to ACT Delay______________ 52-62
    Read to Precharge Delay__________ 3-6
    Static tRead Value_______________ 7-10
    Static tRead Phase Adjust________ [auto] << Leave on Auto Or Zero Or 1-31

    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.3V]
    PCI-E OverVoltage Control_ [+0.1V]
    FSB OverVoltage Control___ [+0.1V]
    (G)MCH OverVoltage Control [+0.15V]

    For 1000+ >>>>>

    CAS Latency Time________________ 5
    Dram RAS# to CAS# Delay_________5
    Dram RAS# Precharge Delay_______5
    Precharge Delay (tRAS)__________ 15/18

    Start With the higher settings, and move lower ONE AT A TIME testing after each move
    ACT to ACT Delay (tRRD)_________ 3-5
    Rank Write to READ Delay________ 11-15
    Write to Precharge Delay_________ 3-6
    Refresh to ACT Delay______________ 52-62+
    Read to Precharge Delay__________ 3-6
    Static tRead Value_______________ 7-10
    Static tRead Phase Adjust________ [auto] << Leave on Auto Or Zero Or 1-31

    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.3V- +0.4V]
    PCI-E OverVoltage Control_ [+0.1V]
    FSB OverVoltage Control___ [+0.1V]
    (G)MCH OverVoltage Control [+0.2V] << May only need .15


    *********************************************

    CPU Voltage Control_______ [1.3750] <<< I did not specify here, because you likely know your CPU by now, and I posted 2 sets of timings. If you need to know, let me know and I will look around for you

    I personally feel OCZ has issues with GA boards, just so you know. And having used 2.5V on the ram I would like to know if you have tested these sticks with Memtest86+ separately on a different system, one by one at stock to see if they are still good?
    Last edited by Lsdmeasap; 07-04-2008 at 03:08 AM.

  3. #3
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    Thank you for your support.

    I think memory are good ,I had change all 4 with dealer and it had same issue.When test with 2 stick it fine without error.

    I've plus Vcore to 1.3875 (1.375 come with old MB P35-ds3r)and test again before I sleep and after wakeup ,2 times it show stable. Assume it pass at 840 ,I will test again later.

    Now new mission is going to 1050 cl5 without error.
    I set all hi-value in your advice. It doesn't help.

    CAS Latency Time________________ 5
    Dram RAS# to CAS# Delay_________5
    Dram RAS# Precharge Delay_______5
    Precharge Delay (tRAS)__________ 18

    ACT to ACT Delay (tRRD)_________ 5
    Rank Write to READ Delay________ 15
    Write to Precharge Delay_________ 6
    Refresh to ACT Delay______________ 62
    Read to Precharge Delay__________ 6
    Static tRead Value_______________ 10
    Static tRead Phase Adjust________ [auto]

    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.4V]
    PCI-E OverVoltage Control_ [+0.1V]
    FSB OverVoltage Control___ [+0.1V]
    (G)MCH OverVoltage Control [+0.2V]

    Static tRead Phase Adjust - if I want to set manual. Do you have any advice? Is there program to calculate? And it can help or not? What can I do next?


    I read thread orther MB. It can adjust Dimms Clock fine delay, REF to ACT Delay, All PRE to Refresh. How possible is next bios ep35-ds3r can adjust much timimgs?(now i use F3h)

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    Try adding +0.125 or +0.15 to MCH if that still does not help, try adding 68 to refresh to act. Before adding the refresh to act though, I would try the added MCH voltage, but bring the ram voltage back down to 2.1 (+0.3)

  5. #5
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    I try to 68, 72 ,150 ,255 it not help. ram voltage +.3,+.4,+.5 ,MCH +.3 not help too.
    I try to set FSB default and set ram speed to 1066 cl5 trfc 54, 68 ,error again.

    EP35-DS3R can run over 1000 with 4 dimms right? or not?

    What can I do now? Is there new bios can help? or adjust spd can help?

  6. #6
    Lsdmeasap's Avatar
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    Yes it can run 1066 with 4 dimms, but like I said OCZ ram has issues with GA boards I think.

    Have you tested this ram on a different system at 4 dimms @1066 to be sure it is not DOA?

    What are you trying 72 ,150 ,255 on? And High Voltages is NOT the way to make things work.

    Is your NB getting Too hot? Can you touch it for more then 10 seconds when running Memtest86+? If not then it is way too hot and that is likely the problem

  7. #7
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    Yes , I test 4 dimms with my dealer MB just fine (30 min).
    I try to adjust Refresh to ACT Delay many value 52,54,56,62,68,72,150,255 it doesn't help.

    I have thermalright hr-05 with fan it so cool.
    Maybe MCH +0.3 is not enough?

    The problem is bios right? now is f3h

  8. #8
    Lsdmeasap's Avatar
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    Ahh I wondered what you was using those higher values on. 62 -68 would have been as high as you needed to try, something else is wrong

    MCH would not need more then .15-.2

    Could be a BIOS issue, if you can use a NON beta BIOS with your CPU that is what I would try next.

    As I said, I feel this brand of ram is not compatible with GA boards. Some do get them to work fine, but not often that I have seen.

  9. #9
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    I observe between 840 cl4 and 1050 cl5 open Everest.

    840 cl4
    dimm 1 clock fine delay 14
    dimm 2 clock fine delay 6
    dimm 3 clock fine delay 13
    dimm 4 clock fine delay 5

    1050 cl5
    dimm 1 clock fine delay 13
    dimm 2 clock fine delay 5
    dimm 3 clock fine delay 12
    dimm 4 clock fine delay 4

    Maybe this is problem. How can I adjust dimm clock fine delay?

  10. #10
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    Default Re: Ep35-ds3r unstable with 4 sticks reaper please help!

    HI! ,Lsdmeasap
    Where are you?

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