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  1. #1
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

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    Cannot achieve 5100MHz on my 8700K CPU anymore

    Hey all.

    On older BIOS's I was able to overclock my 8700K to 5100MHz @ 1.370v 100% stable using Cinebench and AIDA64 for stress testing. I could even get 5200MHz stable at slightly higher volts. Now I'm only able to overclock to 5000MHz stable @ 1.350v.

    @ 5000MHz my idle temps range from 23-25c and full load can push to 75-80c.

    For cooling I'm using the Corsair H115i "Extreme AIO".

    Can anyone think of a reason why I can't achieve my previous OC's? I use adaptive vcore. Any suggestions would be greatly appreciated!

    Kind Regards.
    evo4ever86.

  2. #2
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
    Graphics Card #3ROG Nvlink
    Graphics Card #4Have to feed animals
    Sound CardExternal Audioengine D1 24 bit 192kbps DAC
    MonitorASUS PG348Q @ 100Hz
    Storage #1Intel 905P 480GB U2 flavor
    Storage #2Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1
    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
    CasePhanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM
    Power SupplyCorsair AX 1500i
    Keyboard ASUS Claymore
    Mouse ASUS Spatha, Logitech MX Master
    Headset Sennheiser HD 700
    Mouse Pad ASUS ROG Sheath
    Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub
    OS Win10 Pro 1809
    Network RouterNetGear NightHawk X10
    Accessory #1 NetGear Prosafe 10GBe Switch
    Accessory #2 Qnap TVS-682 NAS modded with I7 CPU

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    With all Inquires please include full system specs.
    MOBO
    CPU
    GPU
    RAM
    BIOS REV previous
    BIOS REV current
    RAM settings
    XMP enabled or no
    RAM volts
    OS and revsison

    Temps dont look like a problem but other than that cant even guess without system specs.

  3. #3
    TeamROG Moderator Array xeromist PC Specs
    xeromist PC Specs
    Laptop (Model)Dell Inspiron 15 7567
    MotherboardMSI x470 Gaming Plus
    ProcessorAMD 2600X
    Memory (part number)16GB Crucial Ballistix Elite 3600
    Graphics Card #1ASUS GTX 1080 Strix
    MonitorBenQ BL3200PT
    Storage #1Intel 600p NVMe
    CPU CoolerWraith
    Casecustom Antec 900
    Power SupplyCorsair HX1000
    Keyboard Logitech Orion Spark
    Mouse Logitech MX500
    Headset Plantronics 777 with Oregon Aero upgrade
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    Quote Originally Posted by evo4ever86 View Post
    Hey all.

    On older BIOS's I was able to overclock my 8700K to 5100MHz @ 1.370v 100% stable using Cinebench and AIDA64 for stress testing. I could even get 5200MHz stable at slightly higher volts. Now I'm only able to overclock to 5000MHz stable @ 1.350v.

    @ 5000MHz my idle temps range from 23-25c and full load can push to 75-80c.

    For cooling I'm using the Corsair H115i "Extreme AIO".

    Can anyone think of a reason why I can't achieve my previous OC's? I use adaptive vcore. Any suggestions would be greatly appreciated!

    Kind Regards.
    evo4ever86.
    Easy way to tell would be to flash the old BIOS. If stability returns it is the BIOS. If not then possibly your CPU is wearing out and unable to sustain the same clocks.
    * Support disease research with Folding@Home *

    < < < Click the drop-down above my avatar for my PC specs!

  4. #4
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

    Join Date
    Jan 2019
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    Quote Originally Posted by JustinThyme View Post
    With all Inquires please include full system specs.
    MOBO
    CPU
    GPU
    RAM
    BIOS REV previous
    BIOS REV current
    RAM settings
    XMP enabled or no
    RAM volts
    OS and revsison

    Temps dont look like a problem but other than that cant even guess without system specs.

    Ill go into the BIOS now get as much info as possible.

  5. #5
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

    Join Date
    Jan 2019
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    Quote Originally Posted by evo4ever86 View Post
    Hey all.

    On older BIOS's I was able to overclock my 8700K to 5100MHz @ 1.370v 100% stable using Cinebench and AIDA64 for stress testing. I could even get 5200MHz stable at slightly higher volts. Now I'm only able to overclock to 5000MHz stable @ 1.350v.

    @ 5000MHz my idle temps range from 23-25c and full load can push to 75-80c.

    For cooling I'm using the Corsair H115i "Extreme AIO".

    Can anyone think of a reason why I can't achieve my previous OC's? I use adaptive vcore. Any suggestions would be greatly appreciated!

    Kind Regards.
    evo4ever86.
    Ok I've got all the info u need,,,

    MOBO: ASUS Maximus X Hero Z370.
    CPU: Intel Core i7 8700K Coffee Lake.
    GPU: MSI 1080 Armor OC.
    RAM: 16GB Kingston Hyper X Fury 2666mhz C15-16-16-35 @ 3333mhz C16-17-17-37 1.250v.
    Previous BIOS: 1704. I update my BIOS every time a new comes out.
    Current BIOS: 1801.
    XMP Disabled.
    Windows 10 Pro with all updates applied.

    If I wanted to revert back to the BIOS which gave me the higher OC's how on earth would I know which one it was? ASUS releases a new BIOS almost every month!
    Last edited by evo4ever86; 01-28-2019 at 11:06 PM.

  6. #6
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

    Join Date
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    Quote Originally Posted by xeromist View Post
    Easy way to tell would be to flash the old BIOS. If stability returns it is the BIOS. If not then possibly your CPU is wearing out and unable to sustain the same clocks.
    The problem is I don't know what BIOS it was.

  7. #7
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

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    Quote Originally Posted by evo4ever86 View Post
    The problem is I don't know what BIOS it was.
    Yep I certainly agree with u. Maybe I should flash back to the first release BIOS and work my up from there, what do u think? If I do decide to do that it will be a very long process! Do u think its worth it?

  8. #8
    ROG Guru: Orange Belt Array rjbarker PC Specs
    rjbarker PC Specs
    MotherboardMaximus XI Extreme (BIOS 0605)
    Processor9900K @ 5.1 Ghz w EK Velocity
    Memory (part number)32 GB -Dominator Platinum 3200 Mhz CAS 16
    Graphics Card #1Evga 1080Ti SC Black Edition w EK FC Blocks
    Graphics Card #2Evga 1080Ti SC Black Edition w EK FC Blocks
    Sound CardOnboard Realtek
    MonitorDell Alienware 34" Ultra wide 120Hz Gsync
    Storage #1Samsung 970 Pro 512G M.2 NNMe
    Storage #2Samsung 860 Pro 512G & 256G
    CPU CoolerEK Supremacy Copper w Nickel Plating
    CaseCorsair 900D
    Power SupplyCorsair AX 1600i
    OS W10 HP x64
    Accessory #1 480 * 360 * 240 XSPC Radiators (15 Fans) w 4 Channel 200W Fan Controller
    Accessory #2 XSPC Photon Rez / Vario Pump combo
    Accessory #3 Fesser Flex Tubing - Bits Power Fittings & EK SLi Terminal
    rjbarker's Avatar
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    Quote Originally Posted by evo4ever86 View Post
    Yep I certainly agree with u. Maybe I should flash back to the first release BIOS and work my up from there, what do u think? If I do decide to do that it will be a very long process! Do u think its worth it?
    Your not sure which previous BIOS ver you were running 5.1 Ghz ? If you can remember just flash to that bIOS and try it....if you cant remember and your going to meticulously try your OC settings on each BIOS ver .....that is pretty tedious....guess it depends how badly you want 5.1 ....me I'd just find 5 stable at the present installed BIOS and call it done.
    Last edited by rjbarker; 01-29-2019 at 03:34 AM.

  9. #9
    ROG Member Array evo4ever86 PC Specs
    evo4ever86 PC Specs
    MotherboardASUS Maximus X Hero Z370 (1801 BIOS)
    ProcessorIntel Core i7 8700K Coffee Lake @ 5100MHz
    Memory (part number)16GB Kingston Hyper X Fury @ 3333mhz C16
    Graphics Card #1MSI GeForce RTX 2080 Gaming X Trio @ 130/1000
    Sound CardIntegrated Realtek HD 7.1
    MonitorLG 42' Inch 4K UHD @ Game Mode
    Storage #1Samsung SSD 960 EVO M.2 NVMe 250GB
    Storage #22x 256GB Samsung SSD 850 EVO @ RAID0
    CPU CoolerCorsair H115i Extreme AIO
    CaseNZXT Noctis 450 MIDI
    Power SupplyCougar GX V3 1050W Plus Gold Modular
    Keyboard Corsair Gaming K63 RGB with Corsair K63 Lapboard
    Mouse Corsair M65 RGB
    Headset Corsair HS60 7.1 Gaming Headset
    Mouse Pad N/A
    Headset/Speakers Corsair HS60 7.1 Gaming Headset / No Speakers
    OS Windows 10 Pro
    Network RouterISP Provided DOCSIS 3.1 Cable Router
    Accessory #1 256GB SANDISK SDCZ880 Extreme Pro USB 3.1 SSD Flash Drive
    Accessory #2 Bluetooth USB Dongle

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    Quote Originally Posted by rjbarker View Post
    Your not sure which previous BIOS ver you were running 5.1 Ghz ? If you can remember just flash to that bIOS and try it....if you cant remember and your going to meticulously try your OC settings on each BIOS ver .....that is pretty tedious....guess it depends how badly you want 5.1 ....me I'd just find 5 stable at the present installed BIOS and call it done.
    It's kinda weird cos no matter how many volts I throw at 5100mhz it juts wont stabilise. I mean it boots into windows fine but as soon as I apply any sort of stress is BSOD'd almost immediately! I guess I'll stick with 5000mhz, an extra 100mhz aint worth the stress imo. I was thinking about swapping my 8700K for a 8086K what do u think? Do the 8086K's clock any higher than the 8700K's? Im guessing they dont. After all 8086K's are just cherrypicked 8700K's anyway.. so maybe,..

  10. #10
    Administrator Array Silent Scone@ASUS's Avatar
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    Rules can change across UEFI builds. Remove any memory overclocking including XMP profile and see if the instability persists.

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