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  1. #1
    ROG Member Array
    Join Date
    Jan 2019

    ROG Strix Z390-H + i9-9900k instability when overclocking

    Hi Guys,

    Here is my build:
    ROG Strix Z390-H
    Corsair H100i liquid cooler
    Corsair Vengeance LPX DDR4-3200
    ASUS ROG Strix OC Nvidia RTX 2080
    Samsung 970 EVO 2TB

    I built the system last weekend and flashed the latest BIOS (1202) on the board. When I use the AI overclocking feature in
    the BIOS (choose gaming and liquid cooling), the BIOS overclocks the CPU and memory to about 20%, and I save the settings
    and reboot.

    Unfortunately, when i use the system (play fornite at high settings). I will get the occasional BSOD with the message (clock watchdog timeout).
    This error seems to indicate some system instability.
    I know the motherboard includes a jumper (CPU overvoltage jumper) to raise the CPU voltage. Should I enable this jumper setting? Is it possible
    the CPU doesn't have enough voltage to operate with this overclocking setting?
    I also read up on the fact that these boards have a somewhat basic VRM 4 phase (split 8phase) power stage, although I don't know if that's relevant.

    Anyways, if anyone has experience with this setup and has had these issues or knows what to do, I would appreciate any assistance.


  2. #2
    ROG Guru: Blue Belt Array mdzcpa PC Specs
    mdzcpa PC Specs
    MotherboardMaximus Hero XI
    Processor9900k @ 5.1Ghz All Core 1.315v AVX -2
    Memory (part number)Gskill GTZ 4133 C17 32GB (4x8GB)
    Graphics Card #1ROG Strix 2080 TI OC
    Sound CardOn Board
    MonitorROG PG348Q
    Storage #1Samsung 970 Pro M.2 512GB for OS & APPS
    Storage #2Samsung 970 Pro M.2 1TB for GAMES
    CPU CoolerROG Ryujin 360
    CasePhanteks Evolv X
    Power SupplySeasonic Prime 1000W Titanium
    Keyboard Corsair K70 LUX RGB
    Mouse Corsair M65 RGB
    Headset Corsaur VOID Pro
    Mouse Pad Corsair MM300 Wide Desk Mat
    OS WIN 10 Pro
    Network RouterLinksys VELOP
    Accessory #1 ROG 751JY Laptop for Moobile Gaming
    Accessory #2 Koolance EXC-800 Chiller
    Accessory #3 25+ years of overclocking

    Join Date
    Nov 2011

    Do you know if your memory is on the QVL for the motherboard? Also, do you know what temps you are seeing on the CPU after extended gaming?

  3. #3
    ROG Member Array
    Join Date
    Jan 2019

    I ran memtest and got no errors. The temps are fine.

    I'll check if the memory is on the QVL.

  4. #4
    ROG Member Array
    Join Date
    Jan 2019

    I just checked and it is indeed part of the QVL

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