Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Page 1 of 2 12 LastLast
Results 1 to 10 of 18

Thread: Can't reach 4GHz on EX58 Extreme & i7 920




  1. #1
    Join Date
    Feb 2009
    Posts
    22

    Default Can't reach 4GHz on EX58 Extreme & i7 920

    I'm not able to get a stable oc above 4GHZ on my 920. I already bumped voltages to high levels and I don't feel confident to raise them any higher. Have I reached the end of the road? Any feedback on my settings? Here are my BIOS settings:


    Advanced CPU Features:
    CPU Clock Ratio .......................... [21x]
    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 ...................... [Disabled]
    CPU EIST Function ........................ [Disabled]
    Virtualization Technology ................ [Disabled] << Disabled if you do not use Vmware or Virtual PC Programs
    Bi-Directional PROCHOT ................... [Enabled]


    Uncore & QPI Features:
    QPI Link Speed ............................ x36
    Uncore Frequency ......................... x17
    Isonchronous Frequency ................... [Enabled]


    Standard Clock Control:
    Base Clock (BCLK) Control ................ [Enabled]
    BCLK Frequency (MHz) ..................... [188]
    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]
    System Memory Multiplier (SPD) ........... [8.0]
    DRAM Timing Selectable (SPD) ............. [Quick]

    Channel A + B + C
    Channel A Timing Settings:
    ##Channel A Standard Timing Control##
    CAS Latency Time ......................... [7]
    tRCD ..................................... [7]
    tRP ...................................... [7]
    tRAS ..................................... [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 ......................................
    tWTP ..................................... (tWTP Must = tWR + tWL + 4)
    tWL ...................................... (tWL Must be CAS Latency -1)
    tRFC .....................................
    tRTP .....................................
    tFAW .....................................
    Command Rate (CMD) ................

    ##Channel A Misc Timing Control##
    Round Trip Latency ...................


    Advanced Voltage Control:
    CPU
    Load Line Calibration ................... [Disabled]
    CPU Vcore ............................... [1.4125]
    QPI/VTT Voltage 1.150v .................. [1.435]
    CPU PLL 1.800v .......................... [Auto]

    MCH/ICH
    PCIE 1.500v ............................. [Auto]
    QPI PLL 1.100v .......................... [Auto]
    IOH Core 1.100v ......................... [1.2]
    ICH I/O 1.500v .......................... [Auto]
    ICH Core 1.1v ........................... [Auto]

    DRAM
    DRAM Voltage 1.500v ..................... {1.6]
    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]

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    How is it unstable? Does it freeze or crash? Do you get BSOD's, if so what is the BSOD Code (Like 0x00000000)?

    I can help you with settings, but more info about your issues would be nice before I did that. Can you also list your full specs including a link to your memory, and what BIOS you are using?

    Thanks

  3. #3
    Join Date
    Feb 2009
    Posts
    22

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    I use Prime95 for a stress test. After about 40 secs the system freezes and ends up with a BSOD; don't know the code but will post when I get it again. I'm on F12.

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

  5. #5
    Join Date
    Feb 2009
    Posts
    22

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    So what's safe in terms of vcore voltage? I seem to read different numbers depending on who's posting them. One number everybody seems to agree on is that 1.55V is the max according to Intel. Do you agree? Then I read that QPI/VTT should be at least equal to vcore. In a PDF document where one oc'ed his 920 to 4GHz vQPI was set to 1.515; is that safe? What I may want to do is knowing the max voltages that are safe to run without degragation and see how high I can bumg blck frequency.

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    Well if your temps are good then you can use 1.4-1.5 if you want without issues. Yes 1.55 is Intel's posted max.

    Q{I/Vtt should only remain within .5 of Vdimm is all for X58. And yes high QPI/Vtt is safe and often may be needed, see my post here on my thoughts on that
    QPI/Vtt Voltage post (High is OK)

  7. #7
    Join Date
    Feb 2009
    Location
    Germantown
    Posts
    80

  8. #8
    Join Date
    Feb 2009
    Posts
    22

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    Gigabyte EX58 Extreme
    Intel i7 920 (watercooled)
    6GB OCZ OCZ3P1600LV6GK DDR3 PC3-12800 1600MHz Platinum XTC
    ATI Radeon 4870x2 (watercooled)
    300GB Velo HD
    Windows 7 x64

    CPU-Z shows the following timings:
    Attachment 2378

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
    Join Date
    Jan 2008
    Location
    PCB Island
    Posts
    25,940

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    Did you have any luck with this yet? If not please post your new current full settings you are trying and I will help you when I get in tonight.

  10. #10
    Join Date
    Feb 2009
    Posts
    22

    Default Re: Can't reach 4GHz on EX58 Extreme & i7 920

    yea, still having stability issues. blck is set to 190 x 21 = 3.99GHz with
    vcore: 1.425
    QPI/VTT Voltage: 1.55
    IOH: 1.1
    DRAM v: 1.6

    The STOP code on the BSOD shows 0x00...124. Any suggestions?

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •