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  1. #1
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    Join Date
    Mar 2019

    P9X79-E WS Manual RAM Timing


    I do not want to do overclocking. I have some problem to get RAM working and decided to set the RAM timing manually now - This is the first time I try to set it manually.

    I think the people in this forum have the best experience with this topic.

    When somebody has a bit of general advice to get RAM to be recognized this is also welcome

    Board: P9X79-E WS
    CPU: E5 1680 v2

    Only 3 out of 8 DIMMs are recognized.

    Click image for larger version. 

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    Lets me show you what I have done already and where my problem with the manual setting is:

    First I checked the JEDEC parameters which are supported by this RAM. I guess the SPD information here is what is stored in the RAM e.g. This is the timings which the RAM needs?

    Click image for larger version. 

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    Then I wanted to disable XMP. The setup option does not match the description! Is setting "AI overclock tuner" to manual the correct setup to disable XMP?

    Click image for larger version. 

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    Now I set the RAM timings based on the given SPD information (See the first image).

    There is a Problem:
    I can set all timings except tRC.

    Where can I set tRC?
    Is it "DRAM Command Rate"? If yes, this field only accepts a value of 3 but according to the SPD Information, I should set 45. What is the problem here?

    Click image for larger version. 

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  2. #2
    ROG 師傅 Array Arne Saknussemm PC Specs
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    Arne Saknussemm's Avatar
    Join Date
    Apr 2012

    What RAM are you using? Is it a single quad channel kit? or is it multiple kits or cheap single sticks?

    Trying to set up manually...just enter primary timings and leave the rest on auto

    Just make sure to set DRAM voltage and SA voltage

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