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Q9550 trying to lower vcore

Discussion in 'Overclocking & Cooling' started by aquax, Apr 3, 2009.

  1. aquax New Member

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    Hi guys, I'm working on lowering my vcore, atm I'm using 1.296v (CPU-Z - LLC Enabled) and all is stable using 1.296v
    I can run IBT / OCCT CPU / Prime Small FFT @ 1.28v vcore, but I would fail Prime Large FFT instantly after 5 min, to get prime Large FFT stable, I have to up my vcore 1.296v.
    With both settings, I tried memtest86 and no errors

    My settings:

    ******Motherboard Intelligent Tweaker (M.I.T.)******

    Robust Graphics Booster.........................[ Auto ]
    CPU Clock Ratio.................................[ 8 ]
    Fine CPU Clock Ratio............................[ + 0.5 ]
    CPU Frequency 4.0GHz............................[ 475 x 8.5 ]

    ******Clock Chip Control******

    CPU Host Clock Control..........................[ Enabled ]
    CPU Host Frequency (Mhz)........................[ 475 ]
    PCI Express Frequency (Mhz).....................[ 100 ]
    C.I.A 2 [Disabled]

    ******Advanced Clock Control******

    CPU Clock Drive.................................[ 800mv ]
    PCI Express Clock Drive.........................[ 900mv ]
    CPU Clock Skew..................................[ 0ps ]
    MCH Clock Skew..................................[ 0ps ]

    ******DRAM Performance Control******

    Performance Enhance.............................[ Standard ]
    (G) MCH Frequency Latch.........................[ 400MHz ]
    System Memory Multipler.........................[ 2.00D ]
    Memory Frequency 800............................[ 950 ]
    DRAM Timing Selectable..........................[ Manual ]

    CAS Latency Time................................[ 5 ]
    tRCD............................................[ 5 ]
    tRP.............................................[ 5 ]
    tRAS............................................[ 15 ]

    ******Advanced Timing Control******

    tRRD............................................[ 3 ]
    tWTR............................................[ 3 ]
    tWR.............................................[ 6 ]
    tRFC............................................[ 60 ]
    tRTP............................................[ 3 ]
    Command Rate (cmd)..............................[ Auto ]

    ******Channel A Timing Settings******

    Static tRead Value [ 11 ] ...............[ 10 ]
    tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

    tRD 2rd (Differnt Rank) [ 6 ] ................[ Auto ]
    tWR 2wr (Differnt Rank) [ 6 ] ................[ Auto ]
    tWR 2rd (Differnt Rank) [ 5 ] ................[ Auto ]
    tRD 2wr (Same/Difft Rank) [ 8 ] ................[ Auto ]

    Dimm 1 Clock Skew Control.......................[ Auto ]
    Dimm 2 Clock Skew Control.......................[ Auto ]
    DDR Write Training..............................[ Auto ]

    ******Channel A Driving Settings******

    Drive Strength Profile..........................[ Auto ]
    Data Driving Pull Up Level......................[ Auto ]
    cmd Driving Pull Up Level.......................[ Auto ]
    ctrl Driving Pull Up Level......................[ Auto ]
    clk Driving Pull Up Level.......................[ Auto ]

    Data Driving Pull Down Level....................[ Auto ]
    cmd Driving Pull Down Level.....................[ Auto ]
    ctrl Driving Pull Down Level....................[ Auto ]
    clk Driving Pull Down Level.....................[ Auto ]

    ******Channel B Timing Settings******

    Static tRead Value [ 11 ] ...............[10 ]
    tRD Phase0 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase1 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase2 Adjustment [ 0 ] ................[ Auto ]
    tRD Phase3 Adjustment [ 0 ] ................[ Auto ]

    tRD 2rd (Differnt Rank) [ 6 ] ................[ Auto ]
    tWR 2wr (Differnt Rank) [ 6 ] ................[ Auto ]
    tWR 2rd (Differnt Rank) [ 5 ] ................[ Auto ]
    tRD 2wr (Same/Difft Rank) [ 8 ] ................[ Auto ]

    Dimm 1 Clock Skew Control.......................[ Auto ]
    Dimm 2 Clock Skew Control.......................[ Auto ]
    DDR Write Training..............................[ Auto ]

    ******Channel B Driving Settings******

    Drive Strength Profile..........................[ Auto ]
    Data Driving Pull Up Level......................[ Auto ]
    cmd Driving Pull Up Level.......................[ Auto ]
    ctrl Driving Pull Up Level......................[ Auto ]
    clk Driving Pull Up Level.......................[ Auto ]

    Data Driving Pull Down Level....................[ Auto ]
    cmd Driving Pull Down Level.....................[ Auto ]
    ctrl Driving Pull Down Level....................[ Auto ]
    clk Driving Pull Down Level.....................[ Auto ]

    ******Motherboard Voltage Control******

    Load-Line Calibration...........................[ Enabled ]
    CPU Vcore [ 1.21250 ]...................[ 1.32500 ]
    CPU Termination [ 1.20 ]...................[ 1.30 ]
    CPU PLL [ 1.50 ]...................[ 1.50 ]
    CPU Reference [ 0.760 ]...................[ 0.863 ]

    MCH Core [ 1.100 ]...................[ 1.30 ]
    MCH Reference [ 0.760 ]...................[ 0.863 ]
    MCH/DRAM Refernce [ 0.900 ]...................[ Auto ]
    ICH I/O [ 1.500 ]...................[ 1.500 ]
    ICH Core [ 1.100 ]...................[ 1.100 ]

    DRAM Voltage [ 1.800 ]...................[ 2.000 ]
    DRAM Termination [ 0.900 ]...................[ Auto ]
    Channel A Ref [ 0.900 ]...................[ Auto ]
    Channel B Ref [ 0.900 ]...................[ Auto ]
     
  2. phanbuey

    phanbuey

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    why would you want a lower V-Core? 1.296 - 1.28 is nothing... its a 1.25% decrease in vcore.
     
  3. Homeless

    Joined:
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    4 ghz @ 1.3v load is quite good imo. Don't think you'll be able to get it any lower
     
    10 Year Member at TPU

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