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Thread: GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

  1. #1
    Join Date
    Sep 2010

    GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

    I am extremely stable to 4GHz but I am not getting my work done for any more. My CPU temperature is 56C. I want to replace my Zalman fan and put a cooler on it (Titan Fenrir xmas) rpm is slower so I think another 120mm Fan might be needed. Goal is 4GHz stable overclock and I need to get 470FSB speed and currently I am having a 440FSB. any help to this would be really appreciated. Thank you in advance for your valuable suggestions.

  2. #2
    Join Date
    May 2008

    Re: GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

    I need to see your settings to answer this question. But if you are using 2.20B multiplier then you would need to use 2.00B and trd also need to be change. MCH voltage may also need to increase. But as I mention we need to see your full settings but you will not need to do much changes aside then few things as you are testing for stability.

  3. #3
    Join Date
    Sep 2010

    Re: GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

    I have the following settings.Patroit 4GB 5-5-5-18 1066 2.0v is my RAM.
    RGB Turbo
    Cpu ratio :8x
    fine cpu ratio: 0.5
    cpu frequency: 4.00GHz (471x8.5)

    cpu host control: enabled
    cpu host frequency(MHz): 470
    pci express frequency(MHz): 100
    cia2: Disabled
    advanced clock control cpu clock drive 800mV
    pci express clock drive 900mV
    cpu clock skew 0pS mch clock skew 0pS

    performance enhance Turbo
    XMP disabled
    system memory multiplier :2.00B
    memory frequency(MHz) :1066 942
    dram timing selectable :manual
    cas latency time: 5
    trcd :5
    trp: 5
    tras: 18
    advanced timing control all set on auto

    mch core: 1.100v 1.360v
    mch reference :0.760v 0.863v
    ich i/o 0.900v :auto
    ich core 1.500v :auto

    dram voltage 1.800v :2.100v
    All other dram setting AUTO
    If you have any other question to ask I will be happy to answer.

  4. #4
    Join Date
    Dec 2007

    Re: GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

    TRD 9 at 450 was fairly easy this will take a bit opf tweaking to get it at 2000 FSB.Using with a 8.5 multiplier for 4GHz and getting 1800 FSB. YOu should get away with much lower mchv probably 1.25 or less would be fine. You can try something mch below 1.5, 480-490 CPU ref with 8.5 multiplier, CPU at around 1.4 or 1.43v and memory at 2.5v or below then this, multiplier should give a realistic performance.

  5. #5
    Join Date
    Dec 2007

    Re: GA-EP45-UD3P Rev. 1.1 F6 Q9550 4GHz

    Following settings are stable enough for my Q9550 to pass 24 hours of Prime95 small and large FFT's and 18 passes of Linx with maximum memory.
    Robust Graphics Booster: FAST
    CPU Clock Ratio : 8
    Fine Clock Ratio :0.5
    CPU Host Clock Control:Enabled
    CPU Host Frequency (MHz): 399 or 401
    PCI Express Frequency (Mhz):100
    C.I.A. 2: Disabled
    System Memory Multiplier (SPD): 2.00B or D = 800MhzDRAM Timing
    Selectable SPD :Manual

    Advanced Clock Control
    CPU Clock Drive: 800mv
    PCI Express Clock Drive:900mv
    CPU Clock Skew: 0ps
    MCH Clock Skew: 0ps

    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): 3-4
    Rank Write to READ Delay:3-6
    Write to Precharge Delay: 4-8
    Refresh to ACT Delay: 50-60
    Read to Precharge Delay: 3-6
    Static tRead Value:6-8
    Static tRead Phase Adjust: Auto

    Advanced Timing Control
    tRRD: 3
    tWR: 6
    tRFC: 50
    tRTP: 3
    Command Rate (cmd): Auto

    System Voltage Control: Manual
    DDR2 OverVoltage Control:+0.300V = 2.1V
    PCI-E OverVoltage Control: Auto
    FSB OverVoltage Control:+0.1V
    (G)MCH OverVoltage Control: +0.2-0.3V
    CPU Voltage Control:1.25
    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
    When running Linx seems little bit warm but all the fans are running or set to silent speed.
    Last edited by SUpER CoP; 27-10-2010 at 08:46 PM.

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