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Thread: Newbie help OCing i7 950




  1. #1
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    Default Newbie help OCing i7 950

    i7 950 D0
    gigabyte GA-EX58-UD3R mobo

    Corsair TR3X6G1600C8D Dominator 6 GB 3 x 2 GB PC3-12800 1600MHz 240-Pin DDR3
    ram
    Coolmaster Real Power 850w power supply
    Coolermaster 212 air cooled

    I just want to get to 4ghz and be stable.
    Suggested settings? I've researched around but still am confused with what settings to use for my setup. I have the latest bios revision
    Thanks for any help

    David
    Last edited by 413x3; 04-26-2010 at 01:13 PM.

  2. #2
    Lsdmeasap's Avatar
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    Default Re: Newbie help OCing i7 950

    Try this for 4Ghz, if you want 4.2 and ram at 1600 exact simply adjust Bclk to 200

    BSOD Error codes and what they mean:
    0X00000050 << Incorrect Memory Timing/Freq or Uncore Multi
    0X00000124 << Incorrect QPI/Vtt Voltage (To Much/Not Enough)
    0X00000101 << Not enough Vcore Voltage


    Code:
    Advanced CPU Features:
    CPU Clock Ratio ................................ [20x]
    Intel(R) Turbo Boost Tech .................. [Enabled]
    CPU Cores Enabled ............................ [All]
    CPU Multi Threading .......................... [Enabled]
    CPU Enhanced Halt (C1E) ................... [Disabled]
    C3/C6/C7 State Support .................... [Disabled]
    CPU Thermal Monitor ......................... [Enabled]
    CPU EIST Function ............................ [Disabled]
    Virtualization Technology ................... [Enabled] << Disabled if you do not use Vmware or Virtual PC Programs
    Bi-Directional PROCHOT ..................... [Enabled]
    
    
    Uncore & QPI Features:
    QPI Link Speed .............................. x36
    Uncore Frequency ..........................  x16-x18 (Always 2x memory Multi or 2x +1, 2x +2, ect - Higher means more Vdimm or QPI/Vtt often) 
    Isonchronous Frequency ..................[Enabled]
    
    
    Standard Clock Control:
    Base Clock (BCLK) Control ................ [Enabled]
    BCLK Frequency (MHz) ..................... 190
    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]
    IOH Clock Skew ............................. [0ps]
    
    
    Advanced DRAM Features:
    Performance Enhance ...................... [Standard]  << Try Extreme or Turbo, they seem to work better on X58 than standard, as needed on previous gen. boards.
    Extreme Memory Profile (X.M.P) ......... [Disabled]
    System Memory Multiplier (SPD) ........ [AUTO] x8
    DRAM Timing Selectable (SPD) .......... [Manual] Expert, set each channel Main timings one by one
    
    Channel A + B + C
    
    Channel A Timing Settings:
    ##Channel A Standard Timing Control##
    CAS Latency Time ...................... 8
    tRCD ....................................... 8
    tRP ......................................... 8
    tRAS ....................................... 20/24
    
    Below values may be left in Auto if you like, generally this is fine.  For those users who DO Set advanced timings manually, please see some of my thoughts and findings about these settings and rules here
    XtremeSystems Forums - View Single Post - Gigabyte EX58-UD5/Extreme Discussion Thread
    
    
    ##Channel A Advanced Timing Control##
    tRC ........................................  (Should be = tRAS + tRP or above for stability)
    tRRD .......................................
    tWTR ...................................... (Must be Write to Read Delay/Same Rank - (tWL + 4)
    tWR ........................................ 5-12 (Odd # values likely will fail)
    tWTP .......................................    (tWTP Must = tWR + tWL + 4)
    tWL ........................................   (tWL Must be CAS Latency -1)
    tRFC .......................................
    tRTP .......................................
    tFAW ......................................
    Command Rate (CMD) ................ 1T
    
    ##Channel A Misc Timing Control##
    Round Trip Latency ...................
    
    
    
    Advanced Voltage Control:
    
    CPU
    Load Line Calibration ................. [Disabled]
    CPU Vcore ............................... 1.25-1.425+ All depends on your CPU itself you may need more/less, just set high at first so you can get booting, you can lower later
    QPI/VTT Voltage 1.150v ............ 1.25-1.45+ This all depends on your CPU IMC itself, uncore settings, and your memory.
    CPU PLL 1.800v ....................... 1.8-1.84
    
    MCH/ICH
    PCIE 1.500v ........................... 1.5-1.54
    QPI PLL 1.100v ....................... 1.14-1.24
    IOH Core 1.100v ..................... 1.1-1.2
    ICH I/O 1.500v ....................... 1.5
    ICH Core 1.1v ........................ 1.14
    
    DRAM
    DRAM Voltage 1.500v .............. 1.66
    DRAM Termination 0.750v [AUTO]
    Ch-A Data VRef. 0.750v [AUTO]
    Ch-B Data VRef. 0.750v [AUTO]
    Ch-C Data VRef. 0.750v [AUTO]
    Ch-A Address VRef. 0.750v [AUTO]
    Ch-B Address VRef. 0.750v [AUTO]
    Ch-C Address VRef. 0.750v [AUTO]

  3. #3
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    Default Re: Newbie help OCing i7 950

    Thanks for the help, but I'm having trouble with the voltage. Prime 95 crashes almost instantly with an error, ATAL ERROR: Rounding was 0.5, expected less than 0.4
    Hardware failure detected, consult stress.txt file.

    I assume it's the voltage. When I put cpu vcore to 1.425 my temps when the test start shoot up to around 100c. When I lower the voltage, the tests abruptly stop with that error message. usually core 0 or 1 first

    When I use the settings above, my cpu shows up as i7 920... when I reset the bios settings, and start windows, it shows up as i7 950.
    Last edited by 413x3; 04-27-2010 at 07:52 AM.

  4. #4
    Lsdmeasap's Avatar
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    Default Re: Newbie help OCing i7 950

    i7 920? What do you mean by it shows up as 920?

    Is that not a good cooler or what? Or maybe you do not have it mounted properly, even a poor cooler should not get to 100C very easily, even at 1.42V. Please check the cooler mounting to be sure you did it securely, or remove it and check that you have proper contact and not an excessive amount of paste.

    And sorry, I overlooked the CPU multi/turbo settings in the above template. Please use 21x200 for 4.2, 21x190 for 4Ghz, or 23x174 for 4Ghz

    Disable Turbo

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    Default Re: Newbie help OCing i7 950

    Thanks, disabled turbo, used 23x174, and upped the voltage


    CPU Vcore ............................... 1.35
    QPI/VTT Voltage 1.150v ............ 1.27
    CPU PLL 1.800v .......................1.84

    I can now get a few tests in with prime95 without it quitting with an error, and temperatures are in the 60s and 70s max. That 90 Celsius was just because I messed up all the settings once

    Any suggestions for fine tuning? Just keep lowering the voltage until prime95 errors out?

  6. #6
    Lsdmeasap's Avatar
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    Default Re: Newbie help OCing i7 950

    How long are you running Prime95 now? You may need to run it 12-24 hours before you decide on lowering voltages, because it if errors before that you may not have them set high enough yet.

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