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Thread: GA-EX58-UD4P Overclocking




  1. #11
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    Default Re: GA-EX58-UD4P Overclocking

    Quote Originally Posted by Lsdmeasap View Post
    Yes, some CPU's need higher QPI then others at any speed. And to add to that some ram XMP Profiles even come with higher then 1.35-1.4+ Standard QPI Voltage setting, so both your ram and CPU can determine that you may just need higher QPI then someone else.

    Did you ever try LESS QPI? I found with 2 CPU's that sometimes less QPI posted better then more at certain Blcks. Also, have you tested x21 multi for your uncore when using the 10 ram multi?

    Try these and see if you have any better luck >>>

    QPI/VTT Voltage 1.35-1.45+

    IOH Core 1.100v .....................1.24 << Have you tried more/less? Just wondering, may not be needed but then again it may. I have used 1.38+ but only for bench's. I can run 1866 ram speed with only 1.24 here so just wondered what you have tried here

    DRAM
    DRAM Voltage 1.68 << Set 1.7-1.72 (With a higher QPI you may want/need to keep this up more then you expected to as some IMC's like a closer range between Dram voltage and QPI/Vtt than others)
    Less QPI and it would either not post at all and just sit there or would go into the bios reboot cycle
    .
    IOH Core I tried 1.2-1.24 no change. (since I do not know what all of the safe values for the setting are I have not moved from your earlier suggested values... yet)

    I will try the Dram and 21x multi asap and let you know.

  2. #12
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA-EX58-UD4P Overclocking

    Ahh, just wondered about the QPI less thing.

    Well, safe how? Intel safe or overclocker safe?

    Could just be your IMC Needs alot to run that ram so high, that or that ram in particular does not get along with your board very well. Could be either or a combo of both. Only way to tell would be if you had a buddy you could borrow different ram from.

    How much QPI and MCH do you need to run your ram at 1600 Cas7 or 8?

  3. #13

    Default Re: GA-EX58-UD4P Overclocking

    Fellow i7 overclocking newb :)

    My specs are in my sig, but so far what I have been doing is underclocking the CPU by forcing 12x multiplier and just testing the limits of my QPI/VTT and Ram. Every voltage is set to "NORMAL" except my QPI/VTT and my DRAM. All power saving features of the CPU are also enabled, including the higher C states.

    What I have found is that my OCZ Ram (model number in my sig) will not run at the spec of 7-7-7-24 at 1600Mhz (8x200BCLK) unless QPI is near 1.45v and DRAM is at least 1.68v. Same problem at (10x160BCLK). I could imagine higher ram speeds (1800Mhz+) wanting 1.5v or higher for QPI, which is scary on air cooling IMO but you do have a good air cooler.

    I don't want to be running QPI over 1.4v so a bit more twiddling and I found I could run the ram at 8-8-8-24 at 1680Mhz (8x210BCLK) at QPI of 1.3v (testing 1.25v as we speak). I hate to think my RAM timings are whats limiting me, not my CPU/QPI, but it appears to be the case. Maybe I should invest in some better RAM :(

    By saying it will not "run" I mean it doesn't pass concurrent Prime95 blend testing and Intel Burn Test for at least 2 hours. I will increase my stability testing to 24 hours once I feel closer to my final settings...

    Once I know what my ram/QPI can handle then I will push my CPU multiplier and CPU Vcore voltage up. Of course I doubt it will work perfectly, the residual heat from the cores may require re-tweaking of the QPI voltages but at least I will know why :) Of course this could all be stupid because I am a newb...
    Last edited by demonsavatar; 04-29-2009 at 10:23 PM.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  4. #14
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    Default Re: GA-EX58-UD4P Overclocking

    I tried 1600 with 8-8-8-24 timimg (tried 9-9-9-28 with same result) with 1.66vdimm and qpi had to be 1.42 just to post, and 1.48 to run Everest processor benchmarks without 124 BSOD errors.

    At 1866 I could not post without QPI at 1.46 ans benchmarks could not run without 1.56-1.58, but ~25% of the time it would still fail with a 124 BSOD error.


    Both references above was at 2.66ghz processor speed with turbo enabled.


    Just for reference I did RMA the memory, PSU out of desperation, and due to the fact that I can not get it to run even when the processor was not overclocked (I know the IMC was).

    I think I may RMA the processor today and see what happens with a replacement, procedded by MB RMA if that does not show results.

  5. #15

    Default Re: GA-EX58-UD4P Overclocking

    Yeah with those numbers you don't appear to be a memory-bound. Post when you have some results with the new processor, though I would think the board would be the more likely candidate.

    Also, do you know what batch your CPU is?
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  6. #16
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    Default Re: GA-EX58-UD4P Overclocking

    Quote Originally Posted by demonsavatar View Post
    Yeah with those numbers you don't appear to be a memory-bound. Post when you have some results with the new processor, though I would think the board would be the more likely candidate.

    Also, do you know what batch your CPU is?

    Do you really think the MB could be the problem?? I ask this because it seems the MC is processor bound so would that not take the MB out of the equation? I do not know which is why I ask...

    I mean I will just RMA the board at the same time if there is a good probability the MB is the problem.

    Oh and the batch # of the processor I posted above (batch# 3836B232)

  7. #17

    Default Re: GA-EX58-UD4P Overclocking

    Well, pushing the memory and uncore multipliers pushes the north bridge and all the power controls on the mobo too. I say the mobo could be a problem because there are just so many variables there with power phases, wiring, northbridge chips--all which come from different places and are assembled.

    I would do a search on google with the first 4-5 characters of your CPU batch and see what people are getting. Within batches the CPU's can be considered fairly similar. If they are also being limited by the MC on different boards, then RMA the CPU first. If you can't find anything or they aren't being limited by the MC, maybe try RMAing just the mobo or both the mobo and CPU at the same time.

    I would like to see what LSDMEASAP has to say though :)

    Mabye mobo's have batch numbers somewhere too? Then we can start comparing our UD4P's even :)
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  8. #18
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    Oct 2002
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    Default Re: GA-EX58-UD4P Overclocking

    So far I have had little success finding any information on the batch number as it seems to be either a relatively new one or a there is a much more limited supply of them.

  9. #19

    Default Re: GA-EX58-UD4P Overclocking

    Yeah I ran a quick search and didn't find much on that batch. Because of that I am probably leaning towards the CPU just because I haven't heard many people being limited by their UD4Ps :). Then again, if I was limited by my mobo, how exactly would I know...?
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  10. #20
    Join Date
    Oct 2002
    Posts
    28

    Default Re: GA-EX58-UD4P Overclocking

    Quote Originally Posted by demonsavatar View Post
    Yeah I ran a quick search and didn't find much on that batch. Because of that I am probably leaning towards the CPU just because I haven't heard many people being limited by their UD4Ps :). Then again, if I was limited by my mobo, how exactly would I know...?
    Exactly.

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