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Thread: Overclocking the P55-UD4P / i7860




  1. #21
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    Default Re: Overclocking the P55-UD4P / i7860

    Quote Originally Posted by Lsdmeasap View Post
    how does it run if you underclock it to 1333Mhz 777-20 using 1.65-1.7V, with NB Set manually above stock and Vtt set to 1.35-1.42?
    If you tell me what numbers I should try, I'd be glad to give it a go. But I did already toast my first UD4P by trying to set some manual voltages that Anand's review suggested (Vcore 1.375, VTT 1.39,and PLL 1.86).

    Also, I RMAd this memory and ordered the 1.65V version. It costs me $30 in restocking, but the 1.65V memory has $40 in rebates, so...

    Thanks.

  2. #22
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    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Overclocking the P55-UD4P / i7860

    I doubt you toasted your board with voltages unless you used insane amount like 1.6+ vcore or 1.7+ QPI/vtt or 1.5+ IOH

    I have used several UD4P's and used very high voltages and never had an issue, that is why I did not comment on your previous mention of voltages. Just thought I'd let it slide by since you already RMA'd


    Don't be scared of voltage, unless you use something crazy it will not hurt your board. If your board really did die on you, it was likely a fluke or caused by something else. I have used Insane voltages on UD4P and not had any issues, on water, and sub zero.

    So you now have the new ram or still waiting? Let me know, and if you already have it or when you get it I can give you a full set of suggested settings to try out. Please link the new memory when you do get it

  3. #23
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    Default Re: Overclocking the P55-UD4P / i7860

    Well the cause and effect were pretty plain; I set vcore to 1.375, VTT to 1.39, and PLL to 1.86, hit F10, and it died.

    The new RAM should arrive today.

    Thanks!

  4. #24
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    Default Re: Overclocking the P55-UD4P / i7860

    I doubt that, likely some other cause. I am running more that that 24/7, and have used up to 1.68 Vcore, 1.7 Vtt, and 1.95PLL. Seen even higher in use as well. Those voltages you mention are no where near close to causing any damage resulting from those settings alone

    Let me know how you get along with your new ram, and I will help ya along if need be

  5. #25
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    Default Re: Overclocking the P55-UD4P / i7860

    Thanks.

    By the way, have you been able to get the eSata ports to work? Mine just refuse to do anything.

  6. #26
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    Default Re: Overclocking the P55-UD4P / i7860

    OK, the new memory is now in.

    I did a quick test: 200 MHz * 20 - 4.0 GHz. SPD multiplier is 8.0, so the memory is running at its rated 1600 MHz.

    The SDP profiles that CPU-Z reports only go up to 666/1333, so it defaulted to some ungodly timings (10-11-11-29) at 1.5V.

    The memory says it is rated for 1.65V, but the Gigabyte BIOS only lets me pick 1.64 or 1.66V.

    So my dream: 200 MHz * 21 = 4.2 Ghz, SPD multiplier of 8.0, memory running at 1600 with its rated 7-8-7-20 timings.

    What do you suggest?

    Thanks!

    PS CPU-Z says the VCORE voltage that "auto" produced is 1.392V. It's running 8 threads of Prime95 at 72C.
    Last edited by InterMurph; 10-15-2009 at 04:36 AM.

  7. #27
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    Default Re: Overclocking the P55-UD4P / i7860

    So I jiggered with the memory timings. it's now running 7-8-7-20 at 1.66V. It ran MemTest86+ for 3 passes with no errors.

    I'm I'm running a Prime95 torture test (Blend). It's at 70C; I'd like to get that down if possible. Earlier, with the old RAM, I had it running 4.0 GHz at 58C.

  8. #28
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    Default Re: Overclocking the P55-UD4P / i7860

    its ok to set ram at 1.66 as it actually sets it at 1.64 in the bios like mine does,try lowering cpu volts manually set it at what auto sets it to and lower it few clicks at a time and test inbetween untill ur unstable then raise it one click also lower qpi voltage same way
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  9. #29
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    Default Re: Overclocking the P55-UD4P / i7860

    Yes, please just set 1.66V or 1.64, both will likely be fine. QPI/VTT may need 1.35-1.4 or so

    Do you have AHCI enabled and AHCI Drivers installed for the Intel ports? If not that is why your eSATA may not be working. It could be a BIOS issue though as I know these boards are new and they are still working very hard on getting things ironed out.

  10. #30
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    Default Re: Overclocking the P55-UD4P / i7860

    It ran Prime95 for 24 hours at 4.0 GHz.

    I can get it to POST at 200 * 21 = 4.2 GHz, but I can't get Windows to start.

    And I do have AHCI enabled now, but I still can't plug in my eSATA drive and have it recognized. I'll bring my other eSATA drive home from work next week.

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