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  1. #1
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    Nov 2020
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    Asus Maximus XI Extreme 4266MHz ram

    Hello everyone, just joined the forums.

    First of all thank you for your help.

    Here are my computer specs:

    CPU: i9-9900KS
    CPU Cooler: Asus ROG Ryujin360 AIO [ROG RYUJIN 360]
    MB: ASUS ROG Maximus XI Extreme [ROG MAXIMUS XI EXTREME]
    GPU: Asus ROG RTX 3090 [ROG-STRIX-RTX3090-O24G-GAMING]
    PSU: Asus ROG Thor 1200W [ROG-THOR-1200P]
    CASE: ASUS ROG Strix Helios GX601 [ROG STRIX HELIOS GX601]
    RAM: G.Skill Trident Z RGB [F4-4266C17Q-32GTZR]

    I just replaced my old 2x8GB DDR4 3000MHz exceleram black kudos memory.

    I am trying to tweak my new 4266MHz memory.

    Running BIOS 1802 on the XI Extreme.

    Extreme Tweak mode 1 will not work with either XMP I or XMP II.
    Extreme Tweak mode 2 works with both.

    On auto, the VCCSA and VCCIO are pushed to 1.40v. I set them manually to 1.25v (I also booted in Windows with just 1.17v both, but with RAM timings not tweaked)
    Enabled MRC fast boot to disable the memory training. Was always changing the memory timings and sometimes the system would hang at different error codes (23, 55, etc).

    Disabled virtualisation as it was impacting my AIDA64 Cache & Memory Benchmark.

    Now running Extreme Tweak mode 2 on XMP II with manual timings, as shown in the ASRock Timing Configurator:
    Click image for larger version. 

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    What is not completely seen in the picture above is RTL and IOL section from ASRock Timing Configurator:

    RTL (CHA) D0: 63
    RTL (CHA) D1: 64
    RTL (CHB) D0: 65
    RTL (CHB) D1: 65

    IO-L (CHA) D0: 3
    IO-L (CHA) D1: 3
    IO-L (CHB) D0: 3
    IO-L (CHB) D1: 3

    IOL Offset (CH A): 25
    IOL Offset (CH B): 25

    RFR Delay (CH A): 14
    RFR Delay (CH B): 14

    tWRPRE: 46
    Write_Early_ODT: 0
    tAONPD: 10
    tXP: 7
    txpDLL: 25
    tPRPDEN: 2
    tRDPDEN: 22
    tWRPDEN: 46
    OREF_RI: 64
    tREFIx9: 127
    tXSDLL: 1024
    tXS_offset: 3
    tZQOPER: 512
    tMOD: 24
    ZQCS_period: 128
    tZQCS: 128

    Giving the following results:
    Click image for larger version. 

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    I opened this thread because I am not sure if I need some help with tweaking the timings next? If yes, I would like to leave the primary timings stock and work with the secondary timings, tertiary timings, etc
    Are my RTL and IOL out of the charts?

    I ask this because all the values are taken from a screenshot from Silent Scone@ASUS (for which I thank you a lot!) that runs same kit on MAXIMUS XI FORMULA, with i9-9900K, picture attached bellow:
    Click image for larger version. 

Name:	4266 Stable SA.jpg 
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    Also, what do you recommend to test stability? I had no BSODs or whatever, just issues with MB sometimes hanging with memory training activated.

    Thank you again for all your help!

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