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  1. #1
    ROG Enthusiast Array
    Join Date
    Aug 2016
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    4000hz or close to! G.SKILL TridentZ Series 32GB DDR 4

    I have a G.Skill R32GB RAM that I'd like to get running at the 4000hz advertised speed (RAM specs below).

    Having real trouble trying to set them manually (XMP I and II both failed as presets in the BIOS).

    Does anyone have a guide using the ASUS ROG bios to set DRAM? Seems anything but straight forward on how to manually set timings, etc.

    Any help appreciated. Thanks. John.

    RAM SPECS
    G.SKILL F4-4000C19D-32GTZSW
    Timing 19-19-19-39
    CAS Latency 19
    Voltage 1.35V


    MOTHERBOARD:
    ROG Maximus Geni
    i9 9900k CPU
    Running at 5ghz after applying TPU insight.

  2. #2
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Maximus IX Code
    Processori7-7700k 5.2GHz Delidded
    Memory (part number)16GB G.Skill Trident Z 4000MHz 16-16-16-39-2T
    Graphics Card #1Titan Xp - EKFC waterblock
    Graphics Card #2Titan Xp
    Sound CardROG SupremeFX 2015
    MonitorHP ZR30w
    Storage #1Toshiba OCZ VX500 256GB
    CPU CoolerSwiftech Apogee GTZ
    CaseThermaltake Armor+ VH6000
    Power SupplyPC Power & Cooling Turbo Cool 1200w
    Keyboard Razer Anansi
    Mouse Logitech G500
    Headset Sennheiser HD6XX
    OS Windows 10 Home 64 bit
    Accessory #1 Asus optical drive
    Accessory #2 Koolance ERM-2K3U
    Nate152's Avatar
    Join Date
    Feb 2013
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    Hi bowman9991

    32GB 4000MHz may be tough to hit, try setting it manually again.

    1) AI Overclock Tuner - Manual
    2) Dram Frequency - 4000MHz
    3) Dram voltage 1.40v (up to 1.50v is safe)
    4) CPU VCCIO voltage - 1.20v - 1.25v
    5) CPU System Agent voltage - 1.20v - 1.25v
    6) Go to Dram Timing Control - At the very top enter the primary timings:

    19
    19
    39
    Command Rate 2

    7) F10 and Enter to save and Exit

    If it still doesn't want to go, on the primary timings page try Maximus Tweak Modes 1 and 2.

    Maximus Tweak Mode 1 - Helps with Compatibility
    Maximus Tweak Mode 2 - Helps with Overclocking

  3. #3
    ROG Enthusiast Array
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    Thank you! I will give this a go when I get home tonight.

  4. #4
    ROG Member Array DeadlyMercury PC Specs
    DeadlyMercury PC Specs
    Laptop (Model)ASUS Zenbook U310UF
    MotherboardASUS ROG Maximus XI Extreme
    ProcessorIntel i9-9900K @5.0GHz
    Memory (part number)64gb G.Skill Trident Z RGB 4000MHz 17-19-19-39
    Graphics Card #1ASUS ROG Strix GeForce RTX 2080 Ti OC
    MonitorHP ZR24w
    Storage #11TB Samsung 970 EVO Plus M.2
    Storage #22x 2TB Samsung 860 QVO RAID0
    CPU CoolerASUS ROG Ryujing 360
    CaseASUS ROG Strix Helios GX601
    Power SupplyASUS ROG Thor 1200w Platinum
    Keyboard Logitech G512
    Mouse Logitech G703
    Headset Beyerdynamics DT 770 PRO / Bose QC 35 II
    Mouse Pad Logitech G440
    OS Windows 10 Pro x64
    Accessory #1 Logitech G940
    Accessory #2 TrackIr 5 Pro
    Accessory #3 HMD Samsung Odyssey+

    Join Date
    Jun 2019
    Reputation
    10
    Posts
    11

    I have similar issue, but I got 64gb (2x32gb kit) of same memory.
    I don't know if memOK kicks in while POST is failing and didn't tried it with 1.25v vccio and vcsa manually, I just tried different settings and my memory started with 3600 17-17-17-37 @1.35 without any problems.

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