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Thread: x-58 extreme maximum memory capacity is 6 gb?!




  1. #11

    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    The new parts of the story:

    I have replaced the two kit's of pair to another.
    But the problem is the same.
    I have played again all weekend without succes.
    Please read my story.
    Maybe what I need only set ram banks individually with
    very little tweaking of advanced timings.
    As you see, other pair of rambrand workoed in this mobo,
    so the problem I'm sure in the advanced settings of the ram.



    -
    So, I have replaced the two pair of ocz1866 to another 2x6 gb.
    And it's behave exactly the same.
    But I have found a solution to 8 gb problem:

    over 1750 can be seen only 8 gb of ram.

    In windows siw or everest all slots are listed ok, the read memory info,
    but still only 8 gb.

    *The "solution" for booting up all 12 gb is b2b latency set to 4.*

    In this case, all of memory over 1800 can be seen but of course there is a
    performance loss. (16500 only)
    And memory test also fail. Memory test ok on b2b cas latency of 8.


    Any voltage setting not helped on this. (even qpi until 1.6-1.8, whith 6 gb is it only 1.38)
    dram voltage on 1.65, tried until 1.68.
    trfc is 144 because of 12 gb.

    In this case I would thinking about motherboard failure, but now the intresting part of this:

    I get 2x6 gb pair (not 12 gb kit, only 2x6 as ocz) of geil 1800 ram.

    A. 6 gb kit ocz + 6 gb kit geil booted ok (but worked only until 1800)
    B. 2x6 gb geil booted up again ok: 10 gb can bee see on bootup.
    Because I have found later that 1 stick of geil is totally dead.
    But still all working stick booted up (10gb)


    *So the question is very obvious: How can it be that 2 pair of ocz can't seen on bootup without b2b cas latency ?*

    Please, give it a try and put 12 gb ram of ocz rams to an gigabyte ud5 / or extreme board
    and would be great any of official statement.
    Now I'm really intrested, why this problem occur.


    The performance and the price of these ram is great, I can't beleive it they can't be work together.

    If you know about any advanced ram tweaking option I can do, please share with me.
    What I have done is only raising to 10-10-10-30-2.
    Trfc 144 always on 12 gb. And b2b latency to 4.



    After 4 pair of 1866 trouble I can't beleive, I can't reach 1860-1880 with 9-9-9.
    Because this mobo can set the rams individually I think for this work and on 6 gb I can reach this speed without any problem.


    Thanks in advance,
    Victor
    Intel Core7 920. D0 stepping
    Mobo: Gigabyte GA-X58-extreme/X58A-UD7
    Chieftec Server case
    PSU: Corsair VX550 W
    Scythe Kabuto cpu cooler
    Scythe s-flex ventillation
    RAM: 12GB ocz platinum 1866 9-9-9-27 (running at below 1700 and 8-8-8)
    GPU:Zotac GTX275 AMP! edition
    HDD:4x1tb samsung spinpoint f1
    Mon: 2x Samsung syncmaster 214t PVA 4:3.
    Os: 32bit xp 64bit w7

  2. #12
    kg4icg is offline Junior Member
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    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    He's trying to overclock setup with 12 gigs, not going to work properly.

  3. #13
    Join Date
    Jul 2009
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    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    I've had the same issues with mine. I have 12GB (6x2GB) of Corsair Dominator 1600.

    Runs fine @ 1600 with just 6GB, but once I put in the 2nd kit of 6GB I have to downclock it to 1200 or else my system won't boot up properly.

    It's supposed to be a design limitation with Intel's memory controller.

    Although I've read on Corsair's forum that someone was able to get 12GB of his running just fine at 1600.

  4. #14

    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    1600 is no problem here with 12 gb.

    1800 is not overclock from an 1866 ram.
    In this term 1600 is an overclock too.
    (since 1333 standard for i7)
    Intel Core7 920. D0 stepping
    Mobo: Gigabyte GA-X58-extreme/X58A-UD7
    Chieftec Server case
    PSU: Corsair VX550 W
    Scythe Kabuto cpu cooler
    Scythe s-flex ventillation
    RAM: 12GB ocz platinum 1866 9-9-9-27 (running at below 1700 and 8-8-8)
    GPU:Zotac GTX275 AMP! edition
    HDD:4x1tb samsung spinpoint f1
    Mon: 2x Samsung syncmaster 214t PVA 4:3.
    Os: 32bit xp 64bit w7

  5. #15
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    Memory spec's are PER KIT, meaning each kit is designed to and will run at spec. Adding additional kits of memory does not always mean you can run stock spec's

    Are you still mixing kits? Either way you may need to run them at 1600Mhz for stability, doing this would also allow you to use tighter timings anyway and could prove to perform better than 1800+ anyway

  6. #16

    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    No, I have no mixing the kits, these are new pair of ocz.

    since yesterday I'm doing exactly as you said :
    Try to fix it around 1700 with faster (8-8-8-) timings the ocz
    and comparing to original 1860 9-9- bench results.
    Not fully tested yet, but there is a hope.

    I have tested geil rams on 1600/7-7-7m it;s should be the same memory speed,
    but 1860 with c9 outperforms all bench results.
    And the best OC on the lowest BCLK is for me the 20x189.
    Thats result 3998 and 1890 ram.
    If I going for lower, I need to rasie baseclock to 205-210 (and lower the ratios of course) which is results higher QPI and this can't be lower.
    (on x58 I know the limit is around 223-225)

    What is your opinion, bclk on everyday use 210 is safe ? (qpi..., others can be lowered with ratios)
    If the qpi is higher all qpi vtt must be raised, which is not the best when driving 12 gb with already upscaled to 1.44)
    Or if I raised it for 12 gb to 1.44 it's enough to perform higher qpi alone without adding more on paperform?



    When I will finish all of these, I will share all results for helping to others deciding the purchasing the rams based on their speeds.

    I just read some ratio tutorial, and it's talking about 1777 margin becuase of core 7 architecture. My rams loose too boot 12 gb when I'm about around this speed. Maybe there is a link between them.

    (Technically, the maximum DRAM speed for a stable system is equal to ((Max. Uncore) / (Safe QPI:Uncore Ratio)) / 2 or (4.0GHz / 9:8) / 2 = 1.777GHz. In between 1.777GHz DRAM and 2.0GHz DRAM you are likely to experience some level of instability over the long term. Past 2.0GHz you are just plain lucky.)

    Btw this docoument is very nice, worth to read it:

    XtremeSystems Forums - View Single Post - Core i7/X58 Overclocking Thread



    Regards,
    Pubem
    Last edited by pubem; 09-07-2009 at 04:11 PM.
    Intel Core7 920. D0 stepping
    Mobo: Gigabyte GA-X58-extreme/X58A-UD7
    Chieftec Server case
    PSU: Corsair VX550 W
    Scythe Kabuto cpu cooler
    Scythe s-flex ventillation
    RAM: 12GB ocz platinum 1866 9-9-9-27 (running at below 1700 and 8-8-8)
    GPU:Zotac GTX275 AMP! edition
    HDD:4x1tb samsung spinpoint f1
    Mon: 2x Samsung syncmaster 214t PVA 4:3.
    Os: 32bit xp 64bit w7

  7. #17
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    210 Bclk is fine, you just have to keep QPI under 8GT/s if you have not hard mod'd your board

  8. #18

    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    Thanks, this is good news.

    My basephilosophy was that keep baseclock at the lowest (and use 21x turbo mode) because of the stress of the system (damn qpi). It will for evereday use of rendering of audio.
    But in this case I have more possibility to gain the best performance with too much stress on the system, and the most important: perfect stability.


    Regards,
    Pubem
    Intel Core7 920. D0 stepping
    Mobo: Gigabyte GA-X58-extreme/X58A-UD7
    Chieftec Server case
    PSU: Corsair VX550 W
    Scythe Kabuto cpu cooler
    Scythe s-flex ventillation
    RAM: 12GB ocz platinum 1866 9-9-9-27 (running at below 1700 and 8-8-8)
    GPU:Zotac GTX275 AMP! edition
    HDD:4x1tb samsung spinpoint f1
    Mon: 2x Samsung syncmaster 214t PVA 4:3.
    Os: 32bit xp 64bit w7

  9. #19
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    Ya it will be fine, that post you linked was written when X58 just came out and much has been discovered since then

    Good luck tweaking things!

  10. #20

    Default Re: x-58 extreme maximum memory capacity is 6 gb?!

    I'll report later all about this and sharing some benchmarks.


    Thank you very much for help, you are very "'kindful'" man.

    (we are talked in private too and lsdmeasap was on track all the time. Ocz still not replied during this, so I can't wrote any news from that side)

    Best Regards,

    Pubem
    Intel Core7 920. D0 stepping
    Mobo: Gigabyte GA-X58-extreme/X58A-UD7
    Chieftec Server case
    PSU: Corsair VX550 W
    Scythe Kabuto cpu cooler
    Scythe s-flex ventillation
    RAM: 12GB ocz platinum 1866 9-9-9-27 (running at below 1700 and 8-8-8)
    GPU:Zotac GTX275 AMP! edition
    HDD:4x1tb samsung spinpoint f1
    Mon: 2x Samsung syncmaster 214t PVA 4:3.
    Os: 32bit xp 64bit w7

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