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Thread: Ga-p35c-ds3r




  1. #1
    Join Date
    Apr 2009
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    Default Ga-p35c-ds3r

    E6750
    DDR3 OCZ3P1333LV4GK 7-7-7-20
    DDR +0.2V
    MCH +0.2V
    Vcore 1.375V


    Hi all,
    I am having a problem O/C this MB. If I change the bus speed to 400Mhz and run a 3.2 memory multiplier the memory will run fine at 1280 Mhz, but if I try to achieve the stated 1333Mhz with a 3.3 multiplier the system will not post and resets the bios to default settings.
    Also there is no [9] CPU host multiplier in the bios settings, the highest I have is [8], is there a reason for this?
    Thanks in advance

  2. #2
    Chike is offline Senior Member
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    Default Re: Ga-p35c-ds3r

    Were you able to run it at 1333 with 333MHz FSB?

    Quote Originally Posted by Gazjoe View Post
    Also there is no [9] CPU host multiplier in the bios settings, the highest I have is [8], is there a reason for this?
    Yes, this is the CPU maximum multiplier.

  3. #3
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    Default Re: Ga-p35c-ds3r

    Yes, sorry forgot to say that it runs fine at 1333 at 333MHz FSB. Passes memtest and prime95.
    It also passes these tests at 400 MHz FSB at 3.2, but I can't even post if I try to run the 3.3 multipier, even if I try to underclock the cpu. It just will not run the 3.3 memory multiplier at all?

  4. #4
    Chike is offline Senior Member
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    Default Re: Ga-p35c-ds3r

    What is the board revision and BIOS version?

  5. #5
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    Default Re: Ga-p35c-ds3r

    Ver 2.2 and bios F12
    I am also unable to raise the FSB above 400MHz, again it resets cmos

    Have added CPU-Z Validator to help you on my signature but I can't see it, is it working?
    Last edited by Gazjoe; 03-28-2010 at 05:50 AM.

  6. #6
    Chike is offline Senior Member
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    Default Re: Ga-p35c-ds3r

    Try with +0.1 FSB OverVoltage and 2.66 memory multiplier, and you probably need more vcore.

    Can't see your signature at all, just fill it with your system specs.
    Use the template from this post to post your full BIOS settings.

  7. #7
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    Default Re: Ga-p35c-ds3r

    Robust Graphics Booster___________ [Auto]
    CPU Clock Ratio ____________ [8]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [398]
    PCI Express Frequency (Mhz)_______ [102]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [3.2]
    DRAM Timing Selectable_______ SPD __ [Manual]

    Performance Enhance = [Standard]

    CAS Latency Time________7________
    Dram RAS# to CAS# Delay___7______
    Dram RAS# Precharge Delay___7____
    Precharge Delay (tRAS)______20____

    ACT to ACT Delay (tRRD)_____Auto____
    Rank Write to READ Delay___Auto_____
    Write to Precharge Delay___Auto______
    Refresh to ACT Delay_______60_______
    Read to Precharge Delay___Auto_______
    Static tRead Value________Auto_______
    Static tRead Phase Adjust________ [Auto]


    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.2V]
    PCI-E OverVoltage Control_ [normal]
    FSB OverVoltage Control___ [normal]
    (G)MCH OverVoltage Control [+0.2V]
    CPU Voltage Control_______ [1.375]

    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] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect___________________[Disabled]

    I will try your settings now, and thanks for your help btw!
    Last edited by Gazjoe; 03-28-2010 at 06:16 AM.
    GA-P35C-DS3R
    Intel E6750 @ 3.4GHz 425MHz bus
    Mem x 3.2 @ 1360 MHz DDR3 OCZ3P1333LV4GK 6-7-7-18 tRFC 66 tRD 7
    FSB +0.1V
    DDR +0.3V
    MCH +0.2V
    Vcore 1.4V
    Gainward HD4750 golden sample
    OCZ SXS 600W

  8. #8
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    Default Re: Ga-p35c-ds3r

    Had a look in bios but I do not have a 2.6 mem multiplier, nearest is a 2.5, but I am already running a 3.2 which at 398 FSB gives me a stable 1277MHz so I need to go up on the multiplier but I only have 3.3 (which fails) or the next step is 4 which is 1592Mhz which seems very high?
    GA-P35C-DS3R
    Intel E6750 @ 3.4GHz 425MHz bus
    Mem x 3.2 @ 1360 MHz DDR3 OCZ3P1333LV4GK 6-7-7-18 tRFC 66 tRD 7
    FSB +0.1V
    DDR +0.3V
    MCH +0.2V
    Vcore 1.4V
    Gainward HD4750 golden sample
    OCZ SXS 600W

  9. #9
    Chike is offline Senior Member
    Join Date
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    Location
    Israel
    Posts
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    Default Re: Ga-p35c-ds3r

    Is Refresh to ACT Delay manually set, this may be too lwo for 1600 or efev 1333.
    Could you post a screen capture of Memset main(click >>) and SPD(click spd) windows?

  10. #10
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    Default Re: Ga-p35c-ds3r

    Attachment 2358

    tRFC is set manually.
    These are also the timings I use at 333Mhz and they work fine.
    Last edited by Gazjoe; 03-28-2010 at 06:35 AM.
    GA-P35C-DS3R
    Intel E6750 @ 3.4GHz 425MHz bus
    Mem x 3.2 @ 1360 MHz DDR3 OCZ3P1333LV4GK 6-7-7-18 tRFC 66 tRD 7
    FSB +0.1V
    DDR +0.3V
    MCH +0.2V
    Vcore 1.4V
    Gainward HD4750 golden sample
    OCZ SXS 600W

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