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Hicookie

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Posts posted by Hicookie

    [GIGABYTE-Z77] DDR Issue report

    in Ivy Bridge (Z77) OC

    Posted

    I I have default Vdimm 1.524V in BIOS "MIT Current Status"......dram voltage didn't work (ET6 and GTL show crazy numbers).

    Exchange two stick in the same channel (or sometime different) and getting default Vdimm 1.536V in BIOS MIT section......dram voltage work OK.

     

    This also happen on my first board Z77X-D3H since first days.

     

    are you mean, after you change the slot with your memory, then the voltage can be adjusted with F5m?

    [GIGABYTE-Z77] DDR Issue report

    in Ivy Bridge (Z77) OC

    Posted

    Both the Z77-UD5H and the Z77-UP4 couldn't run XMP timings on my 7-10-7 ripjaws. Needed 8 CAS. Never did figure out what the problem was.

    Other z77 boards (ASRock professional, TZ77XE4) could do it fine. One other couldn't (asrock extreme6) and needed the same +1 CAS.

     

    Just a heads up really as both boards have been rage-sold at this point :D

     

    what's your Ripjaw X.M.P? which model?

    [GIGABYTE-Z77] DDR Issue report

    in Ivy Bridge (Z77) OC

    Posted

    Because of where the clock generator is, GTL uses ICCS driver Integrated Clock Controller Service, Ivy has clock generator built into the CPU.

     

     

    For the UP7 is you want OC touch to work with Ivy, what i do is I go into GTL after making sure ME, OC Touch, and GTl are properly installed, and then i change the multiplier 1x up or down and then that allows me to use OC touch for multiplier with Ivy Bridge. You can even close GTL after you change the multi, you just need GTl to initialize ICCS driver I believe.

     

    I made a video:

     

    add, if your CPU ratio not working, please check if EIST be disabled.

    [GIGABYTE-Z77] DDR Issue report

    in Ivy Bridge (Z77) OC

    Posted

    I like to open this thread and welcome you guys report incompatible issue with your own memory with GIGABYTE Z77 motherboards. Here is the basic settings, I tested many 2666/2800 modules and stress more than 100 hours without error.

     

    Let me explain somethings about ivy-bridge

     

    1. CPU internal PLL:

     

    Allow to open the internal PLL voltage to go higher, but how high? and what's the default PLL voltage, this is part of Intel NDA, can't leak.

     

    What this function be open help?

     

    • CPU total frequency be improved once you enabled this option
    • by pass IMC 2800, help your chip doing DDR3-2800MHz if enabled this function.

     

    2. IMC: 2800 for every chip?

     

    Yes, almost every chip can do 2800, we know every CPU has IMC margin, raise Vsa(vIMC) and Vtt can help you to reach and stable with 2800 if your chip is not good to handle 2800 by default voltages (Vsa 0.925V. Vtt 1.05V). So its worth to try if does improve your CPU IMC by raising Vsa and Vtt. To get more information, with GIGABYTE's PWM design, Vsa can't be higher than Vtt, beside the UP7.

     

    Take a example, if you set Vsa to 1.25V, then you also need to set Vtt as 1.25V or higher. Some example for you to set those voltages.

     

    • DDR2666, Vsa 1.1V Vtt 1.1V
    • DDR-2800, Vsa & Vtt 1.1~1.25V, some good IMC CPU just need keep them defaults.

     

    So any incompatible issue, please reply on this thread, GIGABYTE will look into your issue.

     

    Overall BIOS settings for your X.M.P memory (if you have XMP memory and don't know where to start just follow those settings)

     

    • Vtt: 1.15V
    • Vsa( vIMC) : 1.15V
    • DDR voltage : 1.65V ( or apply by your X.M.P spec )

     

    tRC------------------auto

    tRRD------------------7

    tWTR-----------------10

    tWR-------------------16

    tWTP------------------auto

    tWL--------------------8

    tRFC-------------------214

    tRTP-------------------10

    tFAW-------------------30

    CMD--------------------2

    tRW Stability level -----auto

    tWR Stability level -----auto

    tREFI-------------------10920

    tREFIx9-----------------95

    tRRDR-------------------3

    tRRDD-------------------3

    tWWDR------------------5

    tWWDD------------------5

    tRWDR(DD)--------------5

    tWRDR(DD)--------------3

    tRWSR-------------------5

    tRRSR--------------------5

    tWWSR-------------------6

     

    For Corsair 2800C12, the TAONPD might need to open, but not on recent BIOS yet.

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