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  1. #1
    New ROGer Array
    Join Date
    Dec 2014

    Turbo Speed Problem with i7 4790 on Extreme VI

    Hello @ all,

    I have a problem with the new BIOS 1603 and the speed of my 4790. Since the update, the CPU has a fixed multiplier on 38 @ FSB 100MHz. But the default multiplier by the CPU is 36 and the boost multiplier 40. If the system did nothing the multiplier was set down to 8 in older BIOS versions but yet it is fixed @ 38.
    In the BIOS is all set to "Auto" for the CPU. For a test I have edit all core ratio values to there standards like core ratio min to 8 and core ratio max to 40, but the multiplier is always fixed on 38.
    I think the BIOS is incompatible with my CPU or I do something wrong.

    Kind regards


  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
    Join Date
    Feb 2014

    Hi Stefan1990, and welcome

    There have been several reports of that sort of problem with BIOS v1603. Most have been cleared up by reverting to BIOS 1505. Since you are using a 4790K Devil's Canyon, be careful not to revert back too far. IIRC 1505 is the first version compatible with 4790K.


  3. #3
    ROG Enthusiast Array Astrix_au PC Specs
    Astrix_au PC Specs
    MotherboardASUS Maximus VI Formula
    Processori7 4770K @4.5Ghz
    Memory (part number)Kingston HyperX 16GB 1600Mhz (2x 8GB)
    Graphics Card #1MSI R9 Fury X 4GB HBM
    MonitorBenq XL2730Z 2550x1440p 144hz 1ms Freesync
    Storage #1Samsung 840 EVO SSD 500GB (OS)
    Storage #2Samsung 840 EVO SSD 200GB
    CPU CoolerCorsair H80i
    CaseCorsair 750D Air
    Power SupplySeasonic 1000w 80 Plus Platnum
    Keyboard Roccat Suora
    Mouse Razer Mamba 2012
    Headset Astro A50 Headset
    OS Windows 10 64bit
    Network RouterNetgear CG3000
    Accessory #1 TrackIr 5
    Accessory #2 Thrustmaster T.16000M
    Accessory #3 Thrusmaster TWCS Throttle
    Astrix_au's Avatar
    Join Date
    Nov 2013

    Is Intel Speedstep on?
    ASUS Maximus VI Formula - i7 4770K - H80i - MSI R9 Fury X - HyperX 16GB Ram - 250GB + 500GB Samsung 840 EVO SSD - Benq XL2730Z 2560x1440p 144hz Freesync - Seasonic 1000w 80 Plus Platnum...

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