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Thread: GA-X48T-DQ6 stability with 2x2GB




  1. #11
    Lsdmeasap's Avatar
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    Default Re: GA-X48T-DQ6 stability with 2x2GB

    So... Did you get the latest Memtest86+ and try that or did you decide to RMA due to a dead stick here?

    If you can, you could test this "Suspect" stick in another PC if you have one to use.

    Let us know what you decide or what happens

  2. #12

    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Hi Guys,

    I've also had that cold boot problem. After some testing now I can say the culprit for the cold boot is the (G)MCH OverVoltage Control.
    It MUST be at least +0.2V for 2x2GB RAM sticks.
    Actually I was able to run memtes and then prime95 for 6 hours without errors using MCH +0.175V and the only issue has the cold boot.
    Normal restart is always OK.
    Looks like boot problems are mostly RAM related. Not sure though!

    Here are my specs:

    GA-X48T-DQ6 rev 1.3
    Intel Q9550 E0 rated 2.83GHz @ 1333MHz FSB
    Cooling: Zalman CNPS 9500 LED
    Kingston KHX13000D3LLK2/4G (can't run 7-7-7-20 @ 1.9V no mater how high DDR3 Overvoltage and MCH is)

    BIOS F6a (a must for nVidia 9800 GTX+)

    (<<< marks where the change was made)

    Advanced BIOS Features
    ----------------------

    Limit CPUID Max. to 3 ____________ [Disabled]
    No-Execute Memory Protect ________ [Enabled]
    CPU Enhanced Halt (C1E) __________ [Enabled] (Disabled during tests)
    CPU Thermal Monitor 2 (TM2) ______ [Enabled]
    CPU EIST Function ________________ [Enabled] (Disabled during tests)
    Virtualization Technology ________ [Enabled]

    MB Intelligent Tweaker (M.I.T.)
    -------------------------------

    Robust Graphics Booster __________ [Auto]
    CPU Clock Ratio __________________ [8]
    Fine Clock Ratio _________________ [0.0] <<<
    CPU Frequency .................... 3.20GHz (400x8)
    CPU Host Clock Control ___________ [Enabled] <<<
    CPU Host Frequency (MHz) _________ [400] <<<
    PCI Express Frequency (Mhz) ______ [100] <<<
    C.I.A. 2 _________________________ [Disabled] <<<
    Performance Enhance ______________ [Standard] <<<
    System Memory Multiplier (SPD) ___ [4.00D] <<<
    Memory Frequency (MHz) ..... 1333 1600
    DRAM Timing Selectable (SPD) _____ [Manual] <<<
    Standard Timing Control
    CAS Latency Time (tCL) _______ 9 [8] <<< aiming for [7]
    Dram RAS# to CAS# (tRCD) _____ 9 [8] <<< aiming for [7]
    Dram RAS# Precharge (tRP) ____ 9 [8] <<< aiming for [7]
    Precharge Delay (tRAS) _______ 24 [22] <<< aiming for [20]
    Advanced Timing Control
    ACT to ACT Delay (tRRD) ______ 4 [Auto]
    Rank Write to READ (tWTR) ____ 5 [Auto]
    Write to Precharge (tWR) _____ 10 [Auto]
    Refresh to ACT (tRFC) ________ 74 [Auto] ??? how low can it go?
    Read to Precharge (tRTP) _____ 5 [Auto]
    Static tRead Value (tRD) _____ 7 [Auto]
    Static tRead Phase Adjust_____ 0 [Auto]
    Command Rate (CMD) ___________ 1 [2T] <<<

    CPU/PCIEX Clock Driving Control __ [800mV]
    CPU Clock Skew Control ___________ [Normal]
    (G)MCH Clock Skew Control ________ [Normal]

    System Voltage Control ___________ [Manual] <<<
    DDR3 OverVoltage Control _________ [+0.15V] (backed down from +0.45V)
    PCI-E OverVoltage Control ________ [Normal]
    FSB OverVoltage Control __________ [Norma] (backed down from +0.1V)
    (G)MCH OverVoltage Control _______ [+0.20V] (backed down from +0.3V)
    CPU GTLREF1 Voltage Ratio ________ [Auto]
    CPU GTLREF2 Voltage Ratio ________ [Normal]
    Loadline Calibration _____________ [Disabled]
    CPU Voltage Control ______________ [Normal] (backed down from 1.30v)
    Normal CPU Vcore ................. 1.25000V

    Questions:
    During prime95 test CPU core#1 & #3 temps went up to 56 C.
    (so reported by Everest). The other two cores never jumped 50 C.
    Does that mean I have spread the thermal grease badly?
    Also NB temp went quite high (49C measured with external sensor
    on top of the heatsink). Should I consider mounting NB coling fan
    or it's OK to rely on Gigabyte heatsink?

    -----
    Best regards,
    Comers

  3. #13
    Lsdmeasap's Avatar
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    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Sounds like maybe you have the dual core old prime? Or does it thread and test all 4 cores? If so, then it is just either the paste or cause the cores are further from the sensor or something. I know they will never all be the same and that isnt too far apart anyway

    NB fan could always help, as would redoing the paste under there! Use NON Conductive if you do

    Give me a link to your ram please and I can better advise you

  4. #14

    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Hi Lsdmeasap

    Thanks for your reply.

    The prime95 is ver 25.7 (latest) and I can see all 4 cores threads running.
    Initially there was as much as 7 C difference between the cores which dropped a bit
    as they went under torture test. Well, I guess new paste is needed.

    The RAM in question is this:
    http://www.valueram.com/datasheets/K...0D3LLK2_4G.pdf
    Kingston claims it can run 1625MHz with 7-7-7-20 @ 1.9V.
    On the other hand the datasheet says it's CL8, so I tried 8-8-8-2x with success.
    Or maybe I need to raise CPU host frequency to 406.25 MHz (funny!).
    Could you suggest something.

    Best regards,
    Comers

  5. #15
    Lsdmeasap's Avatar
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    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Not necessarily, as each core is doing something different always they may always have a 5-8 degree difference. I would say you are fine as long as you load temps do not seem too high

    Although Lower MCH voltage may pass tests, it may be the cause as to why S3 fails. I would use .2-.3 until I was sure otherwise

    Ohh and yes, do use 401 or 40x as 400 exact is right on the NB Strap line and may be unstable to use

    Here is what I would suggest you try for CAS 8, and then CAS 7. As yes I see what you mean, it says CAS 8 and actually 7 and 9 as well. It's the voltages and speeds why that varies

    Memory Frequency (MHz) ..... 1333 1600
    DRAM Timing Selectable (SPD) _____ [Manual] <<<
    Standard Timing Control
    CAS Latency Time (tCL) _______ 7/8
    Dram RAS# to CAS# (tRCD) _____ 7/8
    Dram RAS# Precharge (tRP) ____ 7/8
    Precharge Delay (tRAS) _______ 20/24

    Use 888-24 first, then try 777-20 (888-24 will run at lower Ram voltages)

    Advanced Timing Control
    ACT to ACT Delay (tRRD) ______3-5 (Set 4 or 5 for now)
    Rank Write to READ (tWTR) ____ 3-6 (Set 6 fro now)
    Write to Precharge (tWR) _____ 6-8 (Set 10 as you had for now)
    Refresh to ACT (tRFC) ________ 52-62 (Set 68 for now)
    Read to Precharge (tRTP) _____ 3-6 (Set 6 for now)
    Static tRead Value (tRD) _____ 7-12 (Set 12 for now)
    Static tRead Phase Adjust_____ 0 [Auto] << always Auto
    Command Rate (CMD) ___________ 1 [2T] <<< For sure 2T

    CPU/PCIEX Clock Driving Control __ [800mV]
    CPU Clock Skew Control ___________ [Normal]
    (G)MCH Clock Skew Control ________ [Normal] Maybe 150-250 would help

    System Voltage Control ___________ [Manual] <<<
    DDR3 OverVoltage Control _________ [+0.15V] (backed down from +0.45V) Set to 1.9 for now +0.4)
    PCI-E OverVoltage Control ________ [Normal]
    FSB OverVoltage Control __________ [Norma] (backed down from +0.1V) Use .1-1.2 for now

    (G)MCH OverVoltage Control _______ [+0.20V] (backed down from +0.3V) +.2-.3

  6. #16

    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Hi Lsdmeasap,

    The 8-8-8-22 works fine already. Unfortunately after 10+ good cold boots
    today suddenly it refused. What is better to increase in this case -
    MCH or DDR3 overvoltage or FSB overvoltage.

    Well, I guess I've chosen crap memory (despide the high price).
    It cannot boot with 7-7-7-20 at 1.9V :(

    Here are the settings that do NOT work.
    Is there anything else missing or I should forget 7-7-7-20.
    ---
    DRAM Timing Selectable (SPD) _____ [Manual]
    Standard Timing Control
    CAS Latency Time (tCL) _______ 7
    Dram RAS# to CAS# (tRCD) _____ 7
    Dram RAS# Precharge (tRP) ____ 7
    Precharge Delay (tRAS) _______ 20

    Advanced Timing Control
    ACT to ACT Delay (tRRD) ______5
    Rank Write to READ (tWTR) ____ 6
    Write to Precharge (tWR) _____ 10
    Refresh to ACT (tRFC) ________ 68
    Read to Precharge (tRTP) _____ 6
    Static tRead Value (tRD) _____ 12
    Static tRead Phase Adjust_____ [Auto]
    Command Rate (CMD) ___________ [2T]
    CPU/PCIEX Clock Driving Control __ [800mV]
    CPU Clock Skew Control ___________ [Normal]
    (G)MCH Clock Skew Control ________ [Normal]

    System Voltage Control ___________ [Manual]
    DDR3 OverVoltage Control _________ [+0.40V]
    PCI-E OverVoltage Control ________ [Normal]
    FSB OverVoltage Control __________ [+0.20V]

    (G)MCH OverVoltage Control _______ [+0.25V]

    Best regards,
    Comers

  7. #17
    Lsdmeasap's Avatar
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    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Maybe try +0.3 MCH, and less FSB (Unless you are using 475+ FSB)

    What do you see in PC Health section for +.4 Ram voltage?

    And yes, maybe also try some MCH Skew (150-250)

    Maybe CPU skew 50-150

    Ya, that looks to me like I would be returning it for a refund as it does not run at stock speed even with very loose timings or Auto! Those above should for sure be working as they are very loose. Care to maybe try slots 2 + 4 instead of 1 + 3? It could help

    NOT What you paid for, if you cannot get RMA for a refund from where you bought it still I would get a RMA and sell the new package on ebay without even opening it

    Are you using the latest BIOS? Did you have issues with the previous BIOS if you have updated it? If you have not, maybe you should, please see here if you have not >>>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

  8. #18

    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Hi,
    First I must thank you for your invaluable support and patience.
    Boot failure again.
    +0.3 MCH doesn't help. My FSB is 402MHz.
    (I need my system OCed for intense DVD editing and encoding , not for games,
    hence Quad core CPU and the need for faster RAM).
    BIOS PC Health reports DDR Voltage as 1.92V, when set to +.40V (looks OK to me).
    Neither MCH Skew = 200ps nor CPU Skew = 100ps helps.
    No cold or soft boot. It always reverts back to 333 MHz FSB with RAM to 1333MHz.
    My BIOS is F6a (beta). BTW why Gigabyte is not issuing stable BIOS yet! Long time.
    I needed to upgrade from F5 because in does not support nVidia 9800 GTX+.
    With F5 there was blank screen using nVdidia WHQL drivers. Actually after F6a
    upgrade Windows XP 'found 'new hardware nVidia GeForce 9800 GTX+'.
    (BIOS F5 obviously was not working for me)
    The BIOS upgrade was made with QFlash exactly as per your guide.
    Also I set DMI to be cleared (there were some posts about it here).

    Here are my settings that do NOT work:
    --------
    Limit CPUID Max. to 3 ____________ [Disabled]
    No-Execute Memory Protect ________ [Enabled]
    CPU Enhanced Halt (C1E) __________ [Disabled]
    CPU Thermal Monitor 2 (TM2) ______ [Enabled]
    CPU EIST Function ________________ [Disabled]
    Virtualization Technology ________ [Enabled]

    Robust Graphics Booster __________ [Auto]
    CPU Clock Ratio __________________ [8]
    Fine Clock Ratio _________________ [0.0] <<<
    CPU Frequency .................... 3.21GHz (402x8)
    CPU Host Clock Control ___________ [Enabled] <<<
    CPU Host Frequency (MHz) _________ [402] <<<
    PCI Express Frequency (Mhz) ______ [100] <<<
    C.I.A. 2 _________________________ [Disabled] <<<
    Performance Enhance ______________ [Standard] <<<
    System Memory Multiplier (SPD) ___ [4.00D] <<<
    Memory Frequency (MHz) ..... 1333 1608
    DRAM Timing Selectable (SPD) _____ [Manual] <<<
    Standard Timing Control
    CAS Latency Time (tCL) _______ 9 [7] <<<
    Dram RAS# to CAS# (tRCD) _____ 9 [7] <<<
    Dram RAS# Precharge (tRP) ____ 9 [7] <<<
    Precharge Delay (tRAS) _______ 24 [20] <<<
    Advanced Timing Control
    ACT to ACT Delay (tRRD) ______ 4 [5] <<<
    Rank Write to READ (tWTR) ____ 5 [6] <<<
    Write to Precharge (tWR) _____ 10 [10] <<<
    Refresh to ACT (tRFC) ________ 74 [68] <<<
    Read to Precharge (tRTP) _____ 5 [6] <<<
    Static tRead Value (tRD) _____ 7 [12] <<<
    Static tRead Phase Adjust_____ 0 [Auto]
    Command Rate (CMD) ___________ 1 [2T] <<<

    CPU/PCIEX Clock Driving Control __ [800mV]
    CPU Clock Skew Control ___________ [100] <<<
    (G)MCH Clock Skew Control ________ [200] <<<

    System Voltage Control ___________ [Manual] <<<
    DDR3 OverVoltage Control _________ [+0.40V] <<<
    PCI-E OverVoltage Control ________ [Normal]
    FSB OverVoltage Control __________ [+0.15V] <<<
    (G)MCH OverVoltage Control _______ [+0.30V] <<<
    CPU GTLREF1 Voltage Ratio ________ [Auto]
    CPU GTLREF2 Voltage Ratio ________ [Normal]
    Loadline Calibration _____________ [Disabled]
    CPU Voltage Control ______________ [Normal]
    Normal CPU Vcore ................. 1.25000V

    -----
    BUT there maybe something about slots 2 + 4 instead of 1 + 3...
    I remember that ASUS always suggests to use 2 + 4 (pink) slots
    for 'better overclocking'.
    I'll try this now to see if Gigabyte has same preference,
    tough nothing is mentioned in the manual.

    BRB,
    Comers

  9. #19

    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Well, moving DIMMs to pink slots 2+4 changes nothing.
    No boot at all.
    Maybe DDR3 RAM has a serious compatibility issues after all.
    I should have gone for 1066MHz DDR2 instead.

  10. #20
    Lsdmeasap's Avatar
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    Default Re: GA-X48T-DQ6 stability with 2x2GB

    Does it work with Main timings at 999-24? Have you tried a little bit slower on the ram such as 1400 or so? Maybe less Ram voltage would help

    Ya, you may just have to run 1333 ram speed or get DDR2, 1600Mhz ram just seems like it isnt to compatible with quads and the 4.00x multi at 1600 speeds. This is not the first time I have seen this issue

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