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Thread: Feedback on my i7-920DO Overclock




  1. #1
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    Default Feedback on my i7-920DO Overclock

    Hi everyone,
    I just bought a new system yesterday, and i would like to know if my overclock looks ok.

    cpu : i7-920 stepping do
    MoBo : Gigabyte EX58-UD5 (Great board)
    RAM : OCZ gold PC12800 1600 Mhz 8-8-8-24 (OCZ3G1600V6GK)

    So here's my OC

    BCLK : 200
    Cpu Mult : 21
    CPU PLL : 1.8
    QPI/VTT : 1.335
    Vcore : 1.375 (load line calibration enabled, 1.344 in windows)
    DRAM : 1.66
    QPI PLL : 1.10
    IOH Core : 1.2
    ICH Core : 1.2

    So it gives me a good 4.2 Ghz OC
    My max load temps under OCCT 3.1 for each core is 77, 74, 76, 72
    (I'm using a Corsair H-50 for cooling the CPU in a push/pull setup)

    It's been stable so far.

    I just want some comments about my OC, as i'm new to OCing this socket.

    How's the Vcore? To high? low? What about the other voltages.

    I didn't try to really tweak all the voltages yet.
    Thanks in advance for the feedback.

    G

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Feedback on my i7-920DO Overclock

    Looks good, you using the latest BIOS?

    Vcore seems just about right really. ICH Core may not need to be that high though, and you might need a bit more IOH for stability in strong stress tests.

    Using x18 Uncore (2x +2) will help performance, instead of x16, I am assuming you are using x8 memory multiplier when I say that.

  3. #3
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    Default Re: Feedback on my i7-920DO Overclock

    Quote Originally Posted by Lsdmeasap View Post
    Looks good, you using the latest BIOS?

    Vcore seems just about right really. ICH Core may not need to be that high though, and you might need a bit more IOH for stability in strong stress tests.

    Using x18 Uncore (2x +2) will help performance, instead of x16, I am assuming you are using x8 memory multiplier when I say that.
    Yes my Uncore is x16 right now, and my Ram multiplier is x8.
    I'll try to lower my ICH and see if i need more IOH

    I firts thought that my Vcore and QPI/vtt where a bit high since i saw some people getting this chip to 4.2 with only 1.25 to 1.3 vcore..

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  5. #5
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    Default Re: Feedback on my i7-920DO Overclock

    Quote Originally Posted by phillywood View Post
    ? LSD, do you agree with loadline calibration on
    I'm pretty sure that i saw in another post that he was saying he was using it on his system.

    Anyway, LLC on that board is not that bad i think.
    Vcore in bios is 1.38, in CPU-z it's 1.344 and wen under load, it drops to 1.32x. So there is still a bit a Vdroop.

    I'm not really worried about LLC

  6. #6
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    Default Re: Feedback on my i7-920DO Overclock

    Quote Originally Posted by Glandoux View Post
    Hi everyone,
    I just bought a new system yesterday, and i would like to know if my overclock looks ok.

    cpu : i7-920 stepping do
    MoBo : Gigabyte EX58-UD5 (Great board)
    RAM : OCZ gold PC12800 1600 Mhz 8-8-8-24 (OCZ3G1600V6GK)

    So here's my OC

    BCLK : 200
    Cpu Mult : 21
    CPU PLL : 1.8
    QPI/VTT : 1.335
    Vcore : 1.375 (load line calibration enabled, 1.344 in windows)
    DRAM : 1.66
    QPI PLL : 1.10
    IOH Core : 1.2
    ICH Core : 1.2

    So it gives me a good 4.2 Ghz OC
    My max load temps under OCCT 3.1 for each core is 77, 74, 76, 72
    (I'm using a Corsair H-50 for cooling the CPU in a push/pull setup)

    It's been stable so far.

    I just want some comments about my OC, as i'm new to OCing this socket.

    How's the Vcore? To high? low? What about the other voltages.

    I didn't try to really tweak all the voltages yet.
    Thanks in advance for the feedback.

    G
    im glad you picked the h50 and not the coolit domino, i had one and the cpu hose snapped off completely when installing it very brittle,the h50 has metal barbs on it
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  7. #7
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    Default Re: Feedback on my i7-920DO Overclock

    Was just wondering b/c there was talk about the 45nm quads in this article.
    Did know if it applied for i7's.

  8. #8
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    Default Re: Feedback on my i7-920DO Overclock

    Quote Originally Posted by phillywood View Post
    Was just wondering b/c there was talk about the 45nm quads in this article.
    Did know if it applied for i7's.
    Yes, i've read this article before, and i did a lot of research because of it before using LLC.

    I guess it would apply to the i7 as well, but from what i've been reading, a lot of people is using it, and nobody reports any CPU failure because of this.

    Then again, it's at your own risk, just like everything else when you OC.
    I guess this could be bad if you are using insane Voltages or if your board doesn't handle LLC well.

    For my part i think it is safe, but... i might be wrong! ;)

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Feedback on my i7-920DO Overclock

    Ya LLC is fine, use it all the time. That was a old article, issue caused by board/BIOS not LLC itself directly

  10. #10
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    Default Re: Feedback on my i7-920DO Overclock

    Hey Lsd, looks like my OC is not totally stable.

    I got a BSOD today while i was encoding an HD movie.

    I got BSOD BCCode 7f.
    Any idea which voltage should be related to this one?

    I know that most of the time for the vcore or QPI/vtt it's normally 101 and 124

    thanks,

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