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  1. #1
    New ROGer Array
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    Mar 2019
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    9900K OC help pls

    Hey guys. I am really new at OC I need some advice and tips.

    my setup is the next:
    CPU:9900k
    VGA: GTX1080TI
    RAM: DDR4 3600mhz 16 GB
    board: Rog strix z390 F-gaming
    cpu cooler: Noctua u-14s
    psu: seasonic 750w platinum

    I would like to OC my CPU to 5ghz in a safe way. I tried it with a video (youtube) like 2 days ago but it was not stable if I had a stress stest and gave me Blue screen errors. (kernel) I think heat could not be a problem ( I checked with HW monitor) but im looking forward your replies.
    Thank you so much for the help.

  2. #2
    ROG Guru: Blue Belt Array jab383 PC Specs
    jab383 PC Specs
    Motherboard24/7 rig : Maximus VI Extreme
    Processori7 4790K
    Memory (part number)16GB Mushkin Redline 2400 10-12-12-28 + 16GB Corsair Vengeance 2400 10-12-12-31
    Graphics Card #1AMD Firepro W5000
    Sound CardM6E Supreme FX
    MonitorDell U2413
    Storage #1Kingston SH103S3240G SSD
    Storage #2Seagate ST1000DM003 1TB
    CPU CoolerCustom water loop, Delidded, Liquid Metal TIM
    CaseCoolerMaster HAF XM
    Power SupplyCorsair HX-750
    Keyboard Logitech G710+
    Mouse Logitech M705
    OS Windows 7 64 Pro
    jab383's Avatar
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    Air cooling is always the limitation, and more so with higher core count. 5GHz may be too high a target. The real culprit is core voltage - heat rises with voltage squared at constant clock speed. First try to reduce voltage to see if heat-induced blue screens stop and/or temperatures come down. It would be good to have stress test temperature under 80C.

    I suggest trying 4.5 - 4.6 GHz with lower core voltage. Adjust voltage in .02 volt steps -- up if unstable or down to find the lowest voltage that works when it is stable. Save a profile that works, then try the next higher multiplier and adjust voltage as before. Rinse and repeat until you find a good clock/voltage profile. Watch that temperature, and don't use a setting that goes over 80C.

    Keep a 2 or 3x multiplier setback for AVX instructions set in BIOS. Clock will be lower in parts of the test that use AVX, but that's better than a huge temperature spike that happens otherwise. The setback lets non-AVX software run at higher speed at the same core volts.

  3. #3
    ROG Guru: White Belt Array HisEvilness PC Specs
    HisEvilness PC Specs
    MotherboardASUS ROG Maximus Hero XI
    ProcessorIntel i7 8086k
    Memory (part number)32gb G.Skill TrridentZ RGB
    Graphics Card #1ASUS ROG 1080ti
    MonitorAcer Predator 27Inch/Iiyama G-Master GE2488HS-B2/ProLite E2474HDS
    Storage #1Samsung 960 EVO
    Storage #2Samsung 860 EVO x 2
    CPU CoolerCorsair 150i Pro
    CaseLian-Li Dynamic
    Power SupplyRMx 850
    Keyboard Roccat Vulcan 120 AIMO
    Mouse Roccat Kone AIMO
    Headset Sennheiser 58X
    OS Win 10 Pro 64
    Network RouterASUS RT-N18U
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    May 2017
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    BSOD usually means your overclock is almost stable since it did actually boot but fails under load so you will need more vcore to be stable.
    And consider a closed loop cooler it will greatly help your overclock and the 9900k is churning out a massive amount of heat, the main reason i went for the 8086k over the 9900k. Temps should be your main concern when overclocking and keep that 24/7 overclock going. mid 80's C under load should be what your aiming for and 30 to 40 c while idle/browsing etc.

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