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Thread: Help with further overclocking




  1. #1
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    Default Help with further overclocking

    Hello,

    Im trying to overclock abit further using the Core 2 Quad Q9450 and GA-X38-DS4
    i can seem to reach a FSB of 463 fine which is approx 3.7Ghz however im not able to pass that

    any suggestions on how i can get higher?

    Current settings are

    DDR2 Overvoltage - 0.30+ (2.1v)
    PCI-E Overvoltage - 0.15+
    FSB Overvoltage - 0.20+
    (G) MCH Overvoltage - 0.30+
    CPU Voltage - 1.4V

    Heat isnt really a problem but im somewhat confused by certain settings such as

    CPU/PCIEX Clock driving control
    CPU Clock skew control
    (G)MCH Clock skew control

    Anychance of getting higher clocks or is this pretty much the max i can get from both the cpu and motherboard?

    Thanks,

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Help with further overclocking

    Can you please post me your full settings, in a template from my signature. Also let us know what memory (Link or Model #) you are using, and your BIOS version.

    CPU and MCH Skew can help at higher clocks, maybe try 0/50 or 50/150. Often these are not needed until 500+ FSB though, but you can try them out and see if it helps.

    Do you have a fan on your NB?

  3. #3
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    Default Re: Help with further overclocking

    Hello, i have

    Gigabyte GA-X38-DS4
    Intel Core 2 Quad Q9450
    Corsair Dominator cm2x1024-8500C5D (x4 = 4GB)
    Asus 4870 Dark knight

    yes i have a fan on the northbridge

    Bios is F4F Beta (latest)

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Help with further overclocking

    OK, thanks!

    Now can you please give me the full BIOS settings that are giving you problems, there is a link to a template for you to use in my signature

  5. #5
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    Default Re: Help with further overclocking

    Robust Graphics Booster___________ [Turbo]
    CPU Clock Ratio ____________ [8]
    Fine Clock Ratio ____________[N/A]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [463]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.00D]
    DRAM Timing Selectable_______ SPD __ [Manual]

    Performance Enhance = [Standard]

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

    ACT to ACT Delay (tRRD)_________ 4
    Rank Write to READ Delay________ 4
    Write to Precharge Delay_________ 8
    Refresh to ACT Delay______________ 62
    Read to Precharge Delay__________4
    Static tRead Value_______________9
    Static tRead Phase Adjust________ [Auto]

    CPU/PCIEX Clock Driving Control [800mV]
    CPU Clock Skew Control [normal]
    GMCH Clock Skew Control [Normal]

    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.30V]
    PCI-E OverVoltage Control_ [+0.15V]
    FSB OverVoltage Control___ [+0.20V]
    (G)MCH OverVoltage Control [+0.300V]
    CPU Voltage Control_______ [1.40]

    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Enabled]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Disabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Enabled] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect___________________[Disabled]

    The problem is mainly with exceeding 463 (3.7Ghz) since anything above that will cause the
    system to shut down twice just after booting then revert to its defaults again

  6. #6
    Lsdmeasap's Avatar
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    Default Re: Help with further overclocking

    Thanks, try these and see if it helps any.

    Could be though X38 can't handle these new quads very well? Not sure, not many X38 users around these days.

    And of course not all quads will do 4Ghz, some can only do 3.6-3.8 or so without needing extreme voltages. Only way to know if your CPU is one of those that needs more voltages or if the board is the issue, would be to test it in a new chipset board like P35 or P45 and see if it overclocks much easier or not.


    Robust Graphics Booster___________ [Turbo] << Set Fast for now, just to rule this out
    CPU Clock Ratio ____________ [8]
    Fine Clock Ratio ____________[N/A]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [475]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.00D]
    DRAM Timing Selectable_______ SPD __ [Manual]

    Performance Enhance = [Standard]

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

    ACT to ACT Delay (tRRD)_________ 4
    Rank Write to READ Delay________ 4-6
    Write to Precharge Delay_________ 8-10
    Refresh to ACT Delay______________ 62
    Read to Precharge Delay__________4
    Static tRead Value_______________9
    Static tRead Phase Adjust________ [Auto]

    CPU/PCIEX Clock Driving Control [800mV]
    CPU Clock Skew Control [normal]
    GMCH Clock Skew Control [Normal]

    System Voltage Control____ [Manual]
    DDR2 OverVoltage Control__ [+0.30V]
    PCI-E OverVoltage Control_ [+0.15V] << Maybe only +0.1 needed, if any at all.
    FSB OverVoltage Control___ [+0.20V] << May need 0.25 if you can set, if not did you test +0.3?
    (G)MCH OverVoltage Control [+0.300V] << should be plenty, I wouldn't use more
    CPU Voltage Control_______ [1.40] << May need 1.45-1.5+, what kind of vdrop and vdroop does your board have?

    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Enabled] << * Ouch, here is probably a huge part of your problem, please disable this *
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Disabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Enabled] Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect___________________[Disabled]

  7. #7
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    Default Re: Help with further overclocking

    Hi

    Thanks, but the system just freezes on loading windows, isnt the C1E a just something for the cpu when idle?

    as for the vdroop is that the loadline calabration? which appears to be set to auto at the min not to sure what that is either

  8. #8
    Lsdmeasap's Avatar
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    Default Re: Help with further overclocking

    Yes, but overclocking you should disable C1E and EIST, especially since you are having problems.

    Your freeze may mean you do not have enough Vcore or QPI set, try more until you get into windows.

    Vdrop is the difference between what you set in the BIOS for Vcore and what you get in windows at idle. Vdroop is the difference between what you get for vcore at idle and what you get for vcore under load. LLC Load Line Calibration helps to lessen Vdroop, enabled will help

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