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  1. #1
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    9900K not boosting to 5GHz with Maximus XI Hero optimized defaults

    Title says it all. Can anybody tell me if they see the same thing?

    I have 9900K + Maximus XI Hero, bios version 1302. BIOS is reset to optimized defaults. The CPU never seems to boost to 5GHz, even at idle or with just 1 core loaded in p95. I thought the default was to boost to 5GHz when 3 or fewer cores are under load?

    I've done plenty of tinkering with BIOS settings and tested overclocks, but my chip is pretty bad so I'm going to go back to default settings.

  2. #2
    ROG Member Array LucikMucik PC Specs
    LucikMucik PC Specs
    MotherboardAsus Maximus VIII Extreme
    Processori7 6700k Max 5GHz Watercooled
    Memory (part number)G.Skill 2x4GB DDR4 4000MHz
    Graphics Card #1MSI GTX 980Ti V1 Watercooled
    CPU CoolerCustom watercooling
    CaseThermaltake Core X9
    Power SupplyEvga G2 750W

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    Nov 2015
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    When I installed it for the fist time, it was boosting to 5GHz all the time, after ~ 1 week it stopped and I can't get it work. XI boards are disappointment for me. I have Formula and OLED display doesn't work how it should, aura is buggy...

  3. #3
    New ROGer Array KotOr368 PC Specs
    KotOr368 PC Specs
    Laptop (Model)MSI GT72 2PE Dominator Pro
    MotherboardMaximus XI APEX
    Processori9-9900KF
    Memory (part number)F4-3200C14D-32GTRS
    Graphics Card #1EVGA 1080Ti FTW3
    MonitorASUS PG278QR
    Storage #1Intel SSD 545s
    Storage #2Segate 2TB + 4TB
    CPU CoolerNoctua NH-D15s
    CasePhanteks Enthoo Luxe
    Power SupplySeasonic 850W Titanium
    Keyboard A4Tech Bloody B328
    Mouse A4tech BLOODY J95
    Headset HyperX Cloud
    OS W10 x64

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    Jan 2019
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    What is your temps? Because i have experience that Z390 push a lot Voltage on default settings and high temps = no max boost . try Hwinfo and chek CPU a VRM temps

  4. #4
    ROG Enthusiast Array
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    How did you guys solve that?

  5. #5
    ROG Enthusiast Array pinkfloyd1173 PC Specs
    pinkfloyd1173 PC Specs
    MotherboardAsus Rog Maximus XI (Wi-Fi)Z390
    ProcessorIntel i9 9900K
    Memory (part number)Corsiar Dominator Platinum RGB 32GB 3200MHZ
    Graphics Card #1EVGA RTX 2080 Ti FTW3 Ultra Overclocked
    MonitorAsus VG27AQ
    Storage #11 v-NAND SSD 970 PRO 2 TB
    CPU CoolerCorsair H100i Pro RGB
    CaseCOOL MASTER MC500P
    Power SupplyCorsair HX1000i
    OS Windows 10 Pro
    Network RouterAsus RT-AX88u
    pinkfloyd1173's Avatar
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    Hey man I am a noob to OC, but I followed this YT vid and my 9900K is at 5GHZ. From what I understand the default boost oc settings of asus is pretty bad?

    https://youtu.be/bM5XO96b4G0

    Click image for larger version. 

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  6. #6
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    Quote Originally Posted by Luck100 View Post
    Title says it all. Can anybody tell me if they see the same thing?

    I have 9900K + Maximus XI Hero, bios version 1302. BIOS is reset to optimized defaults. The CPU never seems to boost to 5GHz, even at idle or with just 1 core loaded in p95. I thought the default was to boost to 5GHz when 3 or fewer cores are under load?

    I've done plenty of tinkering with BIOS settings and tested overclocks, but my chip is pretty bad so I'm going to go back to default settings.
    There are 3 settings in bios you need to change to have it stop throttling.
    Set CPU Cache current limit max to the max=255.75
    And in Internal CPU power mangement change the long duration package powerlimit and the short duration package powerlimit also to the max=4095
    This works well on optimized default with most on auto setting. Also use the xmp profile to use your ram as it should.
    The video from Der8auer explains it also but is more for overclocking your cpu.
    Btw, the 9900k only boosts to 5Ghz on mild loads, usually when at your desktop. Games and p95 will drop all cores to 4.7Ghz unless if you overclock it.
    I use HWinfo64 with osd options to see voltages etc when gaming.

  7. #7
    ROG Guru: Brown Belt Array MrAgapiGC PC Specs
    MrAgapiGC PC Specs
    MotherboardAsus Maximus XI Code
    Processor9900K
    Memory (part number)CMK32GX4M4B3600C18
    Graphics Card #1STRIX-GTX1080ti-O8G-GAMING
    MonitorAOC AGON AG2701QX (2)
    Storage #1Samsung 960 EVO 256GB
    Storage #2Kingston Savage 500GB
    CPU CoolerNzxt X74 360mm AIO
    CaseNzxt H700
    Power SupplyEVGA 850 G2
    Keyboard Logitech G810
    Mouse Asus Spartha
    Headset Hyper X Cloud Revolver S
    Mouse Pad Hyper X Fury S 900mx420mm
    Headset/Speakers Logitech Z337
    OS Windows 10 64btis
    Network RouterTpLink Archer C9
    Accessory #1 EKWB FANs all of them
    MrAgapiGC's Avatar
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    Nov 2011
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    Quote Originally Posted by Luck100 View Post
    Title says it all. Can anybody tell me if they see the same thing?

    I have 9900K + Maximus XI Hero, bios version 1302. BIOS is reset to optimized defaults. The CPU never seems to boost to 5GHz, even at idle or with just 1 core loaded in p95. I thought the default was to boost to 5GHz when 3 or fewer cores are under load?

    I've done plenty of tinkering with BIOS settings and tested overclocks, but my chip is pretty bad so I'm going to go back to default settings.
    why a old bios? that version is not stable i remeber that. happens to me also on those days
    Learn, Play Enjoy!

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