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  1. #1
    ROG Junior Member Array
    Join Date
    Jan 2018
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    CH VII & 3900X high vcore in BIOS

    Hi, I've just bought a 3900X and a Crosshair VII Hero WiFi. Just turn it on for the first time and the vcore in BIOS is always 1,4-1,47 v. All is set to auto, just default settings. Is It normal?
    Thanks in advance.
    Last edited by wolfgang91; 09-03-2019 at 02:59 PM.

  2. #2
    ROG Guru: Orange Belt Array xeizo PC Specs
    xeizo PC Specs
    Laptop (Model)HP i7-7500U 16GB 256GB NVMe
    MotherboardAsus Crosshair VII Hero
    ProcessorR9 3900X
    Memory (part number)32GB G.Skill Trident Z RGB 3800MHz
    Graphics Card #1MSI RTX2070 Super Gaming
    Sound CardMotu M2
    MonitorAOC 1440p 27" S-PLS
    Storage #11TB Samsung 970 Plus NVMe
    Storage #2plenty
    CPU CoolerNoctua NH-D15 Chromax.black
    CaseNZXT H700
    Power SupplyCorsair RM850x
    Keyboard Logitech G710+ MX Brown (50$ on sale)
    Mouse Steelseries Sensei RAW
    Headset Sennheiser HD600
    Mouse Pad Steelseries, hard
    Headset/Speakers Swissonic ASM5 active studio monitors (thomann.de)
    OS Windows10 Pro
    Network RouterAsus RT-N66U

    Join Date
    Apr 2016
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    Yes, it is normal. Don't bother, it's more interesting what happens in Windows!

  3. #3
    ROG Junior Member Array
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    Ok, thank you very much! I'll enjoy It in Windows then!

  4. #4
    ROG Guru: Brown Belt Array gupsterg PC Specs
    gupsterg PC Specs
    MotherboardAsus Maximus VII Ranger
    Processori5 4690K
    Memory (part number)HyperX Savage 2400MHz 16GB
    Graphics Card #1Sapphire R9 Fury X (1145/545 Custom ROM)
    MonitorAsus MG279Q
    Storage #1Samsung 840 Evo 250GB
    Storage #2HGST 2TB
    CPU CoolerThermalRight Archon SB-E X2
    CaseSilverstone Temjin 06
    Power SupplyCooler Master V850
    Headset/Speakers HyperX Cloud
    OS Win 7 Pro x64 / Win 10 Pro x64
    gupsterg's Avatar
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    Feb 2015
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    Short answer as xeizo said .

    Long answer , the CPU will not idle in UEFI the same as it does in OS. If you had a wall plug meter, you'd see complete system could be pulling ~120W, where as idle in OS is ~60W.

    UEFI is a mini OS, CPU boosts in UEFI, so you see voltages for that context. In my opinion Ryzen FW/UEFI is not optimised for that case, so just ignore, use the UEFI to set settings, not for sitting in and watching ...
    Intel Defector AMD Rebel

    TR 1950X - Custom WC - Asus Zenith Extreme Alpha - G.Skill Trident Z 3400MHz C14 QC - RX VEGA 64
    R5 3600 - Custom WC - Asus Crosshair VII Hero Wifi - G.Skill Ripjaws V 3800MHz C16 - Sapphire HD 5850 Toxic

    24/7 OC: i5 4690K @ 4.9GHz CPU@1.255v 4.4GHz Cache@1.10v - Archon SB-E X2 - Asus Maximus VII Ranger
    Sapphire Fury X (1145/545 ~17.7K GS 3DM FS)

  5. #5
    New ROGer Array
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    Its an ASUS thing. I have crosshair Viii hero wifi and second ssystem with asrock x570 pro4.

    On asrock idle voltages are miles better than asus in windows. I guess pushing things too much is an asus thing. Asus board will idle in 1.4v mostly, yes it does dip to sub 1v but lot less than asrock board. My averages are always 1.4v. I am talking identical setup other than the CPU 3600 vs 3900x in the Asus setup. But still my asrock averages in 1.0**** volts in idle vs asus 1.4v volts average in windows. They both have ABB version of bios. I think ASUS quality in bios has gone to ****. Voltages are all over the place. I have the same drivers, same version of windows and same amount of ram.

    Yes under load asus voltages will go down but idle is a whole different beast.

  6. #6
    ROG Guru: Brown Belt Array gupsterg PC Specs
    gupsterg PC Specs
    MotherboardAsus Maximus VII Ranger
    Processori5 4690K
    Memory (part number)HyperX Savage 2400MHz 16GB
    Graphics Card #1Sapphire R9 Fury X (1145/545 Custom ROM)
    MonitorAsus MG279Q
    Storage #1Samsung 840 Evo 250GB
    Storage #2HGST 2TB
    CPU CoolerThermalRight Archon SB-E X2
    CaseSilverstone Temjin 06
    Power SupplyCooler Master V850
    Headset/Speakers HyperX Cloud
    OS Win 7 Pro x64 / Win 10 Pro x64
    gupsterg's Avatar
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    I'll just leave these here...

    Click image for larger version. 

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    Intel Defector AMD Rebel

    TR 1950X - Custom WC - Asus Zenith Extreme Alpha - G.Skill Trident Z 3400MHz C14 QC - RX VEGA 64
    R5 3600 - Custom WC - Asus Crosshair VII Hero Wifi - G.Skill Ripjaws V 3800MHz C16 - Sapphire HD 5850 Toxic

    24/7 OC: i5 4690K @ 4.9GHz CPU@1.255v 4.4GHz Cache@1.10v - Archon SB-E X2 - Asus Maximus VII Ranger
    Sapphire Fury X (1145/545 ~17.7K GS 3DM FS)

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