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Thread: ED45-UD3p with 8400 Dual Core overclock help! :)




  1. #271
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    I'd say try up to but not more than 1.425v, if small FFT fails. Maybe run default FFT test for 150 minutes(10 tests) not to miss possible failures.

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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Okay, time for an update on my testing.

    As previously posted, I had tried testing yesterday with the references.

    With CPU PLL 1.59, VCore 1.37500, MCH Core 1.24, VTT 1.24,

    With MCH References at 0.72, I tried CPU references from 0.70000 to 0.86000, all failed Prime95

    Then I switched MCH Reference to 0.74 and tried CPU references from 0.70000 to 0.87500 and all failed Prime95.

    I then switched MCH Core to 1.26, and repeated the cpu reference tests again with mch reference 0.72 and 0.74, failing Prime95. Of note, I got a BSOD (124) once during MCH ref 0.72/CPU ref 0.730, but was unable to repeat it.

    I then tried CPU clock skew of 200, which also failed Prime95

    I then tried doing short FFTs with increase of VCore. I'm now up to 1.42500, which tested for the longest, but eventually failed. Most or all of these failures, only one "worker" fails and the other continues.

    I have not gone above 1.42500, as advised.


    This was my most recent test - VCore 1.42500
    Test went for just over 2 hours when worker #1 failed

    <img src = http://img88.imageshack.us/img88/7601/vcore142500.png>

  3. #273
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Tough one, but you'll make it eventually.
    Try 2 clicks higher DRAM Voltage, and then 1.26v VTT.

    EDIT: are you running each test 4 minutes only? I wouldn't go below 8 minutes, and use 10 for now untill this one is solved.
    Last edited by Chike; 09-29-2011 at 11:04 AM.

  4. #274
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Which version of Prime95 are you running?
    On my system, the Prime95 entries don't have the "Pass1=XXX, Pass2=XXX" at the end of each line.
    Please post a screen-shot of the Prime95 torture test options window that shows your selected small FFT options right before you start the test.
    Attached is a picture of the default Prime95 settings for the small FFT, large FFT, and Blend test settings.

    ED45-UD3p with 8400 Dual Core overclock help! :)-prime95-torture-test-default-options_01-png
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  5. #275
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    I am glad to read it..learning more...thanx.







    Buy Runescape Gold|Buy Maple Story Mesos|buy wow gold

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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    I'm running late for work, but after my last post I tried up'ing VTT one click to 1.26. It's still running and the workers are completing tests at the same time. I'll check and respond to other posts once I get to work.

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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by Chike View Post
    Tough one, but you'll make it eventually.
    Try 2 clicks higher DRAM Voltage, and then 1.26v VTT.

    EDIT: are you running each test 4 minutes only? I wouldn't go below 8 minutes, and use 10 for now untill this one is solved.
    I've been running the default short FFT settings (15 minute tests) as per your previous instructions.

    Quote Originally Posted by profJim View Post
    Which version of Prime95 are you running?
    On my system, the Prime95 entries don't have the "Pass1=XXX, Pass2=XXX" at the end of each line.
    Please post a screen-shot of the Prime95 torture test options window that shows your selected small FFT options right before you start the test.
    Attached is a picture of the default Prime95 settings for the small FFT, large FFT, and Blend test settings.

    ED45-UD3p with 8400 Dual Core overclock help! :)-prime95-torture-test-default-options_01-png
    I didn't get a chance to check version, but the small FFT settings are just like in your screenshot. I know for certain that I downloaded it here:

    http://forums.tweaktown.com/gigabyte...ity-tools.html



    Quote Originally Posted by jake8078 View Post
    I'm running late for work, but after my last post I tried up'ing VTT one click to 1.26. It's still running and the workers are completing tests at the same time. I'll check and respond to other posts once I get to work.
    In regards to my comment here, I looked a little further, and it looks like they weren't completely in sync, but were within a minute or two of each other. But in previous testing where I mentioned this phenomenon, they seemed to be skewing at a faster rate (same spread over a much shorter testing period).

    Since VTT seemed to make the difference, I lowered VCore 3 clicks before leaving for work, to see if it would continue to be stable. I'll know in about 8 hours

  8. #278
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    I didn't get a chance to check version, but the small FFT settings are just like in your screenshot. I know for certain that I downloaded it here:

    http://forums.tweaktown.com/gigabyte...ity-tools.html
    Whoops, I have an older version of Prime95, thanks!!
    Q9650 @ 4.10GHz [9x456MHz]
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    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
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  9. #279
    Chike is offline Senior Member
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quote Originally Posted by jake8078 View Post
    I've been running the default short FFT settings (15 minute tests) as per your previous instructions.
    Oh, OK my bad I didn't pay attention to earlier tests only to the two that been stopped.

  10. #280
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    Default Re: ED45-UD3p with 8400 Dual Core overclock help! :)

    Quick update, my previously mentioned test failed while at work, so I clicked VCore back up twice (one click below the successful test previous to that one) to 1.41875, and clicked VTT up once to 1.28. Running (15 minute) Short FFT now, for a couple hours if it continues.

    EDIT: 30 minutes in and no failures yet - usually fails within 20. I'll let it run for about 90 more minutes, and then click down VCore once more.
    Last edited by jake8078; 09-30-2011 at 04:49 AM.

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