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Thread: GA-EP45-UD3P - Won't boot with 450FSB




  1. #451
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    Hmm at what FSB? Lets see the settings, and I will have a gander and post ya back some thoughts.

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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    LSD do you think is possible for a E8400 E0 1.25VID chip not beying able to reach 4GHz with less than 1.4V? I've been trying to reach 4GHz for over a month now (both 500x8 or 445x9) with every possible setting I could think of, and every run of prime, orthos or whatever results in a restart. The lower I take the vcore from 1.4V the quicker the restart occurs (1.4V 45-60 minutes, 1.375V 15-20 minutes; 1.35V 2-3 minutes; 1.30V 1-2 seconds).
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
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  3. #453
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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    Well ya, VID is not always a sure indicator of what voltages any Given CPU will need at higher Freq's. It is more often a sure indicator of what lower voltages it may be able to use at stock though. You are right though, often a low VID means low voltage all around, but not always

    I am not sure about 1.25 though as it isn't all that low, maybe that is not how you were asking anyway though?

    I'd say if you have tried it all then that chip just may need more, I know the ones I have had No E0's needed 1.34-1.38 to be stable at 4Ghz. I'd say just go higher and see how things pan out

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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    I went all the way to 1.425V, which seemed to be pretty stable (maybe a couple of hours, then I stopped it, can't really remember), but temps were to high for me (about 75-76C on each core). Well, I guess my chip really is a voltage hog and I'll stick to 3.6 and tweaked mem settings, which is pretty fast. I just thought it's strange, as I can POST and load windows with as low as 1.3V but i need 1.425 to get it stable.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
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  5. #455
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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    I feel ya for sure, my last two 775 CPU's were VERY Volt hungry, it could be other things though since you can post at 1.3. Have you tested with ram underclocked and loosely timed to be sure that is not part of the issue holding you back at lower vcore?

  6. #456

    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    I am using 1.425 with 540x8 testing currently.

    Temps are around 63degC under Prime load and things are ALMOST stable, just Prime Large that screws me over.

    I will update the template this evening if at all possible.
    * CPU: Intel i7-3770K @ Stock * Cooling: Corsair H80i / Noctua NF-F12 x2 * MoBo: Gigabyte GA-Z77X-UD5H (Rev. 1.1 - BIOS F16 Mod16) * RAM: Crucial 1600MHz DDR3 32GB (4x8GB) *
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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    Quote Originally Posted by Lsdmeasap View Post
    I feel ya for sure, my last two 775 CPU's were VERY Volt hungry, it could be other things though since you can post at 1.3. Have you tested with ram underclocked and loosely timed to be sure that is not part of the issue holding you back at lower vcore?
    It's not the RAM for sure. I'm keeping it @1066 5-5-5-15 with 2V for daily use (24h+ prime stable). While trying to achieve 4GHz I had it at 2.1V. and did a few hours of prime testing with a lower multi and same settings and all was ok. I also tryed loosening timings to 6-6-6-18 and tRD up to 12 with no difference. I tryed hundreds of MCH/CPU references (0.64 to 0.80 something) combinations with 1.1 up to 1.34 VTT and everytime I get a restart during prime/orthos/linx in the interval stated above.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
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    Windows 7 Pro x64

  8. #458
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    Unhappy Re: GA-EP45-UD3P - Won't boot with 450FSB

    Quote Originally Posted by morph View Post
    It's not the RAM for sure. I'm keeping it @1066 5-5-5-15 with 2V for daily use (24h+ prime stable). While trying to achieve 4GHz I had it at 2.1V. and did a few hours of prime testing with a lower multi and same settings and all was ok. I also tryed loosening timings to 6-6-6-18 and tRD up to 12 with no difference. I tryed hundreds of MCH/CPU references (0.64 to 0.80 something) combinations with 1.1 up to 1.34 VTT and everytime I get a restart during prime/orthos/linx in the interval stated above.
    Sounds like you got all the bases covered, that sucks you can't get 4GHZ I just hope it isn't some pesky setting like MCH Ref/MCH Core that is stopping you, or perhaps the settings in advanced clock control. (PCI/CPU Clock Drive and Skews)

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    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    Nah, tryed changing Clock Drive and Skews as well.
    Initially I thought it was my old EP45-DS3L not beying able to handle 445 FSB stable because same thing happened using that board as well. But after getting the UD3R I'm thinking it's the chip itself. But still, it performs pretty well with 3.6GHz. And I can get it to 3.9GHz stable with resonable volts and temps.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  10. #460

    Default Re: GA-EP45-UD3P - Won't boot with 450FSB

    My E8500 E0 VID 1.25, can run 4GHz with 1.26V actual (1.29V bios) vcore, Prime small FFT 12hrs+.


    Core2Duo E8500 E0 @4.25GHz (500x8.5)
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