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  1. #1
    ROG Member Array Inkar PC Specs
    Inkar PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel i9-7940X
    Memory (part number)[Trident Z] F4-3200C14Q-64GTZ
    Graphics Card #1EVGA 1080Ti SC2 Black
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    Post R6E: Any clue on what is the expected i9-7940X overclock?

    Hi,

    Does anyone have a clue about what is the all core expected i9-7940X (non-avx) overclock range with the Rampage VI Extreme and an AIO?.
    I know nothing is guaranteed other than the factory specs. I just can't find any reviews with this kind of data for the 7940X.


    Thanks.

  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
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    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
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    As soon as you mentioned AIO you killed the OC capabilities.*

    There isn’t much data out there just yet as the platform is just too new. What is out there are comparisons on the 7900X and the 7920X.

    If you want to run a mild OC a very good AIO is required like at least a Corsair H115i or one of the 360 rad AIOs. *If you want to see what it can really do it’s going to require a well designed custom loop.*

  3. #3
    ROG Guru: Brown Belt Array Brighttail PC Specs
    Brighttail PC Specs
    Laptop (Model)Asus G751JT
    MotherboardAsus x299 Rampage VI Extreme
    ProcessorIntel i9-7900x
    Memory (part number)Corsair Dominator Platinum SE 3200Mhz 4x8
    Graphics Card #1MSI GTX 1080TI
    MonitorAcer XB321HK (4k,IPS,G-sync)
    Storage #1Intel 900p (Boot) 2xSM961 (RAID 0) Games
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    CasePhanteks Enthoo Elite
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    I have to agree here. Anything over a 7900x is pretty much very limited to any decent overclock over the set turbo unless you have the ability to really cool the chip. I would also agree that you would need a minimum of a 360 rad on any AIO. Just based off a quick internet search 4.3 is the turbo limit but that is only on 2 cores. With an AIO i think you would be very lucky to hit 4.0 on all cores under normal CPU stress tests. The HCC processors just throw off that much heat.
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
    MSI GTX 1080 TI / 2x Intel 900p in a bootable VROC RAID 0 / Samsung 960 Pro 512GB
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    Corsair AX 1200i / Corsair Platinum K95 / Asus Spatha
    Acer XB321HK 4k, IPS, G-sync Monitor / Water Cooled / Asus G571JT Laptop

  4. #4
    ROG Member Array Inkar PC Specs
    Inkar PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel i9-7940X
    Memory (part number)[Trident Z] F4-3200C14Q-64GTZ
    Graphics Card #1EVGA 1080Ti SC2 Black
    MonitorROG Swift PG279Q
    Storage #1Samsung 960 Pro 2Tb
    CPU CoolerEVGA CLC-280
    CaseCoolerMaster Cosmos C700P
    Power SupplyEVGA SuperNova 1200W P2
    OS Windows 10 Fall Creators Update

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    Thanks for the replies.

    Definitely I'm going to buy a good AIO. I have this one in mind, but could change it for another if there is something better:
    EVGA CLC 280 - https://eu.evga.com/products/product...400-HY-CL28-V1

    I read this review at TomsHardware for the 7960X (has 2 more cores than the 7940X). They got a 4.3GHz OC with a Corsair H100i, but the temps are 84-88ºC while stress-testing. Guess with 2 less cores and the slightly better cooler I could keep that speed with more reasonable temps and that would be it.

  5. #5
    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
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    Mouse Pad ASUS ROG Sheath
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    More like this

    https://www.amazon.com/ARCTIC-Perfor.../dp/B01KZTE0XS

    or this

    https://www.amazon.com/Thermaltake-U.../dp/B00MPIDYTO

    or this

    https://www.ekwb.com/shop/ek-xlc-predator-360-incl-qdc

    Any of these will be acceptable but barely for mild OC. Again if you want to clock it then you will need to do a proper custom loop. A 300W TDP when the Vcore is jacked and all cores are loaded and OCd is not out of the question and there is currently no AIO that can handle that.

    Of course Im adding two GPUs in the mix but Ill be running 2x480, 1x360 and 1x240 or 280 which ever will fit in whats left. The 480s will have push pull configuration. Ill have it done within the next few days.
    Last edited by JustinThyme; 10-16-2017 at 04:18 AM.

  6. #6
    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
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    CPU CoolerCustom water loop, Delidded, Liquid Metal TIM
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    I agree with JustinThyme that AOI is inadequate for the expected 300 watts, plus GPU. I also think that, at the 300 watt level, no water loop will cool the CPU well with all that baby poo under the heat spreader. Consider delidding and using a better TIM.

  7. #7
    ROG Guru: Orange Belt Array mpoffo PC Specs
    mpoffo PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel 7900x
    Memory (part number)G.Skill F4-3200C16Q-32GTZR = 32 GB 3200 Kit
    Graphics Card #1Nvidia Geforce 1080 FE
    Graphics Card #2Nvidia Geforce 1080 FE
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    CPU CoolerCorsair H115i
    CaseCorsair 900D
    Power SupplyCorsair 1200i
    Keyboard Corsair K95 - RGB
    Mouse Corsair Glaive
    Headset Turtle Beach Surround
    Mouse Pad Corsair MM800 RGB Polaris
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    I have a Corsair H115i and under stress tests things heat up but under the limits (high 60's to mid 80's depending on the stress/benchmark test). For normal everyday use though (i.e. gaming) things seem to run pretty cool with a 4.4/4.5 OC for me on all cores. In some games the temps stay in the 40's (Ark) or get a bit warmer (50's). Again it will depend on the game/application you are running and how it utilizes the CPU.
    Last edited by mpoffo; 10-16-2017 at 08:29 PM.
    RVIE X299 System:
    Windows 10 Prof 64-bit | Intel Core i9 7900x | ASUS Rampage VI Extreme | Corsair AX 1200i PSU
    Corsair 900D | 32 GB 3200 G.SKILL Trident RGB Series | EVGA GTX 1080 in SLI (x2) | Nvidia 2D Surround Set-up
    Samsung 840 PRO 256 GB | Samsung 850 EVO 500 GB | Intel 520 SATA SSD 240GB HD | 2 & 4 TB WD Black Hard Drive
    Creative Sound Blaster Z | Logitech THX 5.1 speaker setup

  8. #8
    ROG Member Array Inkar PC Specs
    Inkar PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel i9-7940X
    Memory (part number)[Trident Z] F4-3200C14Q-64GTZ
    Graphics Card #1EVGA 1080Ti SC2 Black
    MonitorROG Swift PG279Q
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    Quote Originally Posted by mpoffo View Post
    I have a Corsair H115i and under stress tests things heat up but under the limits (high 60's to mid 80's depending on the stress/benchmark test). For normal everyday use though (i.e. gaming) things seem to run pretty cool with a 4.4/4.5 OC for me on all cores. In some games the temps stay in the 40's (Ark) or get a bit warmer (50's). Again it will depend on the game/application you are running and how it utilizes the CPU.
    Thanks. Skunkfoo has a 7940x too and is getting approximately the same results with the AIO he is using for testing before he makes his custom build.

    BTW, I'm guessing you didn't delid. Did you?

  9. #9
    ROG Guru: Orange Belt Array mpoffo PC Specs
    mpoffo PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel 7900x
    Memory (part number)G.Skill F4-3200C16Q-32GTZR = 32 GB 3200 Kit
    Graphics Card #1Nvidia Geforce 1080 FE
    Graphics Card #2Nvidia Geforce 1080 FE
    Sound CardSound Blaster Z
    MonitorNvidia Surround (5960 x 1080)
    Storage #1Samsung 840 Pro256 GB/850 Evo 500 GB
    Storage #2WD 2 TB & 4TB Black Hard Drives
    CPU CoolerCorsair H115i
    CaseCorsair 900D
    Power SupplyCorsair 1200i
    Keyboard Corsair K95 - RGB
    Mouse Corsair Glaive
    Headset Turtle Beach Surround
    Mouse Pad Corsair MM800 RGB Polaris
    Headset/Speakers Logitech 5.1 Surround THX Speakers
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    Quote Originally Posted by Inkar View Post
    Thanks. Skunkfoo has a 7940x too and is getting approximately the same results with the AIO he is using for testing before he makes his custom build.

    BTW, I'm guessing you didn't delid. Did you?
    To clarify I have a 7900x and no I did not delid (although tempted to). I can't imagine the results will be much different though.
    RVIE X299 System:
    Windows 10 Prof 64-bit | Intel Core i9 7900x | ASUS Rampage VI Extreme | Corsair AX 1200i PSU
    Corsair 900D | 32 GB 3200 G.SKILL Trident RGB Series | EVGA GTX 1080 in SLI (x2) | Nvidia 2D Surround Set-up
    Samsung 840 PRO 256 GB | Samsung 850 EVO 500 GB | Intel 520 SATA SSD 240GB HD | 2 & 4 TB WD Black Hard Drive
    Creative Sound Blaster Z | Logitech THX 5.1 speaker setup

  10. #10
    ROG Guru: Brown Belt Array Brighttail PC Specs
    Brighttail PC Specs
    Laptop (Model)Asus G751JT
    MotherboardAsus x299 Rampage VI Extreme
    ProcessorIntel i9-7900x
    Memory (part number)Corsair Dominator Platinum SE 3200Mhz 4x8
    Graphics Card #1MSI GTX 1080TI
    MonitorAcer XB321HK (4k,IPS,G-sync)
    Storage #1Intel 900p (Boot) 2xSM961 (RAID 0) Games
    Storage #2Samsung 850 Pro 512GB - WD Black 4TB
    CPU CoolerCustom Water Cool
    CasePhanteks Enthoo Elite
    Power SupplyCorsair AX 1200i
    Keyboard Corsair Platinum 95
    Mouse Asus SPATHA
    Mouse Pad Corsair MM800
    Headset/Speakers Kanyo Y5
    OS Windows 10 64 bit
    Accessory #1 2 x Alphacool Full Copper Radiator 420mm/280mm
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    I have some answers on delidding a 7900x on the STICK BUILD thread.
    https://rog.asus.com/forum/showthrea...538#post680538
    Panteks Enthoo Elite / Asus x299 Rampage VI Extreme / Intel I9-7900X / Corsair Dominator Platinum SE 4x8 3200MHz
    MSI GTX 1080 TI / 2x Intel 900p in a bootable VROC RAID 0 / Samsung 960 Pro 512GB
    Samsung 850 PRO 512GB / Western Digital Gold 8TB HD
    Corsair AX 1200i / Corsair Platinum K95 / Asus Spatha
    Acer XB321HK 4k, IPS, G-sync Monitor / Water Cooled / Asus G571JT Laptop

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