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  1. #31
    Major Asshattery Array Protocol PC Specs
    Protocol PC Specs
    MotherboardRampage VI Extreme
    Processori9-7940X
    Memory (part number)Corsair Dominator Special Edition Torque - DDR4-3200
    Graphics Card #1EVGA GTX 1080 Ti FTW3 - EK waterblock
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    Sound CardOnboard Audio
    MonitorAcer Predator XB321HK
    Storage #1Samsung 960 PRO NVMe
    Storage #2Samsung 960 PRO NVMe
    CPU CoolerEK R6E Monoblock
    CaseCorsair 900D
    Power SupplyCorsair AX1200i
    Keyboard Corsair K90
    Mouse Razer Mamba Tournament Edition
    Headset Astro A40
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    Headset/Speakers Klipsch THX
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    Quote Originally Posted by Silent Scone View Post
    Leave phase profiles at defaults, simply increase the current limit. If the CPU has not been delidded, AVX range is limited. You're pulling 300W+ through the die, and you're not able to pull the heat away fast enough. You can set a small offset for cache and keep voltages low. Should be able to reach 3Ghz with 1.05v or less, this can help with temps. Lowering VCCIN whilst checking for stability can help, too.

    Short of that, you'll need to delid the CPU.
    Thanks for the info there. At the time I hadn't gotten around to the cache clocking but you are right - a small bump to 3 GHz needed only ~1.020v (offset mode). Stable at that voltage. Gained ~2% in graphics heavy benchmarks. Like 12% in memory-intensive benchmarks though.

    I did set the CPU power phasing back to standard. Didn't appear to make a difference in temps or stability. Leaving it at standard.

    Thinking about recording all settings and starting over with BCLK instead just to see what I can get out of it - we will see how my availability to tackle that is though. It's been a busy week so far.
    Last edited by Protocol; 11-15-2017 at 11:52 PM. Reason: Spelling
    | Corsair 900D | i9-7940X @ 4.5 GHz 24/7 (All-Core) | Rampage VI Extreme |
    | 32GB (4x8) Corsair Dominator Special Edition 3200 Kit (14-16-16-36) |
    | EVGA GTX 1080 Ti FTW3 with EK blocks - 2x-SLi | Corsair AXi1200 PSU |
    | 2x Samsung 960 PRO NVMe | Custom Liquid Cooling (Dedicated CPU/VRM - EK Monoblock) vs. VGA Loops | Koolance Fittings |
    | 2x 360mm BlackIce SR-1 Radiators - Push-Pull | 12x Corsair AF-120 Fans |
    | 2x MCP655-PWM Pumps | 2x BitsPower 250mL Reservoirs


  2. #32
    ROG Guru: White Belt Array
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    Any updates as to who's running stable frequencies now and their associated settings. Just got my 7940X from SL and looking for a baseline to start with. The CPU has been binned at 4.4Ghz but I should be able to get more out of it on custom water.
    Last edited by Homewrecker; 01-25-2018 at 11:00 AM.

  3. #33
    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Homewrecker View Post
    Any updates as to who's running stable frequencies now and their associated settings. Just got my 7940X from SL and looking for a baseline to start with. The CPU has been binned at 4.4Ghz but I should be able to get more out of it on custom water.

    Non delidded
    4.7Ghz *Prefered cores 4.8 1.25v Adaptive
    4000Mhz CAS 16-17-16-41-1T 1.4v
    Cache 3.0Ghz @ 1.05v
    VCCIN 1.85v LLC6
    AVX -3 / AVX512 -5

  4. #34
    New ROGer Array Hot Trout's Avatar
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    My Current build and results

    Current Build :

    CPU : Intel Core i9 7940X (Non Delid)
    Motherboard : ASUS Prime x299 Deluxe
    RAM : TEAM GROUP XTREEM 32GB 3600MHZ (16-16-16-36)
    Optane : Intel Optane 32GB
    Graphics Card : Asus GTX 980ti 20th Anniversary Edition

    Boot Drive : Intel Optane 900P 480GB AIC Add in Card PCIe SSD
    App Drive : 1TB NVMe Samsung SM961 M.2
    Game Drive : 1TB NVMe Samsung 960 Pro M2 48 Layer
    Data Drive : WD Black 3TB WD3003FZEX
    Cache Drive : 250GB OCZ Revo Drive 3
    Storage Drive 1 : WD Gold 10TB Helium WD101KRYZ
    Storage Drive 2 : WD Gold 10TB Helium WD101KRYZ

    Case : Corsair Obsidian 700D + Mods
    PSU : Seasonic 1250 watt GOLD Modular
    Radiator : RASA RX360 Special Edition
    Water Block : EK Supremacy Evo x299 Prime Water & VRM Block
    Water Fittings : EK Compression Fittings
    Jizz : Mayhems Pastel White Coolant
    Thermal Conduit : LIQUID ULTRA THERMAL PASTE
    Pump & Tank : Eheim 300 + Home Made Header Tank 4litre



    Current BIOS Settings :

    4.6Ghz on all cores except 4, 6 and 10 which are at 4.5GHz for cooling reasons only
    3600Mhz CAS 16-16-16-36 1.1v as per XMP Default
    Cache 3.0Ghz @ 1.05v
    Cache Ratio : 30
    AVX : 4 (4200Mhz)
    AVX 512 : 5 (4100Mhz)
    VCCIN : 1.85v
    CPU VCCIO : 1.1
    CPU System Agent : 1.05
    Load Line Calibration (LLC) : 6




    This configuration passes the following tests :

    Intel Diagnostic Tool v4.1.0.24.W.MP Full Test Max Temp 82oc
    Computer Pulls and pushes data all day 24/7 with full CPU loads under this build.

    Could I ask if anyone could offer some further advice on the correct VCCIO and CPU System Agent settings. Do you use auto for yours?
    Last edited by Hot Trout; 01-11-2018 at 02:20 PM.

  5. #35
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    Hi guys,

    I can read that several of you are reaching frequencies above 4.5*GHz on all cores. Congratulations.

    I was just wondering one thing, are these frequencies stable under extreme stress testing conditions? And by extreme I mean the following:

    - Running Prime95 v26.6 (non-avx version) blend test 24h
    - Running Prime95 v26.6 (non-avx version) 8K FFT test 20min (to make sure temperatures stay below 94C)
    - Running Prime95 recent version (with AVX) blend test custom 1h for AVX
    - Running y-cruncher HNT stress testing for more than 100 passes to test AVX-512

    I have a 7980XE (so a bit off topic) but I'm currently able to pass all the above Prime95 testing with Vcore offset mode and per-core overclocking, I have a few cores at 42x, some x43, most at 44x and one at 45x.

    The y-cruncher HNT stress test for AVX-512 has been the trickiest one so far. I've had freezes when setting cores at 44x/45x, so I've had to increase LLC for it, for which I'm still trying to find the right value (as I'm writing these lines I have LLC set to 6 and it successfully did 62 passes). Also had to set an AVX-512 offset down to 8 for it...

    Anyone trying to achieve extreme stability or are you guys running softer stability tests?
    Last edited by Thireus; 01-23-2018 at 01:53 PM.

  6. #36
    ROG Guru: Yellow Belt Array Marko911 PC Specs
    Marko911 PC Specs
    MotherboardAsus Rampage extreme VI
    Processori9 7900x @4,7Ghz cores at from 7x1,20v-3x1,21v
    Memory (part number)G.skill 32GB 3200MHZ CL14 DDR4 quad kit
    Graphics Card #1Aorus 1080ti extreme edition @2032Mhz/12000Mhz
    MonitorAsus something IPS,144Hz ,Freesync
    Storage #1m.2 Samsung EVO 960 1TB
    Storage #2m.2 Samsung EVO 960 500GB
    CPU CoolerEKWB monoblock
    CaseThermaltake view 71 TG
    Power SupplyCorsair RM1000i
    Keyboard rappo wireless keyboard and mouse
    Headset Logitech G933
    OS win 10 pro/64bit
    Accessory #1 HL GTS 360mm/push only
    Accessory #2 HL SR2 360mm push/pull
    Accessory #3 HL SR2 420mm push/pull
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    Quigle 5200

    Forget about OCing intel cpus especially HEDT CPUs,no custom loop will help either .You need to do delidd first and put some liquid metal.

  7. #37
    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Marko911 View Post
    Forget about OCing intel cpus especially HEDT CPUs,no custom loop will help either .You need to do delidd first and put some liquid metal.
    Interesting comment, are you speaking vicariously or have you done any testing yourself?

  8. #38
    ROG Guru: Yellow Belt Array Marko911 PC Specs
    Marko911 PC Specs
    MotherboardAsus Rampage extreme VI
    Processori9 7900x @4,7Ghz cores at from 7x1,20v-3x1,21v
    Memory (part number)G.skill 32GB 3200MHZ CL14 DDR4 quad kit
    Graphics Card #1Aorus 1080ti extreme edition @2032Mhz/12000Mhz
    MonitorAsus something IPS,144Hz ,Freesync
    Storage #1m.2 Samsung EVO 960 1TB
    Storage #2m.2 Samsung EVO 960 500GB
    CPU CoolerEKWB monoblock
    CaseThermaltake view 71 TG
    Power SupplyCorsair RM1000i
    Keyboard rappo wireless keyboard and mouse
    Headset Logitech G933
    OS win 10 pro/64bit
    Accessory #1 HL GTS 360mm/push only
    Accessory #2 HL SR2 360mm push/pull
    Accessory #3 HL SR2 420mm push/pull
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    Quote Originally Posted by Silent Scone View Post
    Interesting comment, are you speaking vicariously or have you done any testing yourself?
    Sorry for the late replay.This forum doesn't give me notification when someone replay to me.I did tested OC on my i9 7900x.Running custom loop with two 60mm thick HL rad SR2420mm push only and SR2 360 in push pull in full tower case thermaltake View 71.I have rockit99 delidd tool,which I will be using with my RVIE monoblock from EK as soon as my Singularity Computer parts arrive,I don't have time now to disassemble my loop 2x in one month.So I have info only on stock TIM under IHS of 7900x.I can hit 4,3Ghz on 8 cores and 2 core at 4,6Ghz and it runs stable-ish.For me true stability testing is Asus Realbench and HandBrake H264x.
    Temps rose to 91C,tjmax 105.VRM doesn't hit above 80C on RVIE with heatsink.
    Supermacy Evo do make good contact with IHS but heat transfer is really really poor.(as it was with my kabby lake 7700k,which before delidding could hit unstable 4,6 after delidding could hit 5,0 at 1,45V and temps never rose above 75C in prime95 26.6 non AVX)-survived Realbench,IBT for 2,5hours ,Handbrake H264x and prime95 26.6 for 5h.-Damn,that system was blazing fast,boot in seconds...
    So i9 7900x is really sluggish compared to kabylake,but I hope to see after delidding some improvement .Also,my G.skill 16gb ram which I used for testing couldn't hit XMP 3000mhz,So I had to dial down to 2692Mhz.

  9. #39
    ROG Guru: Yellow Belt Array Marko911 PC Specs
    Marko911 PC Specs
    MotherboardAsus Rampage extreme VI
    Processori9 7900x @4,7Ghz cores at from 7x1,20v-3x1,21v
    Memory (part number)G.skill 32GB 3200MHZ CL14 DDR4 quad kit
    Graphics Card #1Aorus 1080ti extreme edition @2032Mhz/12000Mhz
    MonitorAsus something IPS,144Hz ,Freesync
    Storage #1m.2 Samsung EVO 960 1TB
    Storage #2m.2 Samsung EVO 960 500GB
    CPU CoolerEKWB monoblock
    CaseThermaltake view 71 TG
    Power SupplyCorsair RM1000i
    Keyboard rappo wireless keyboard and mouse
    Headset Logitech G933
    OS win 10 pro/64bit
    Accessory #1 HL GTS 360mm/push only
    Accessory #2 HL SR2 360mm push/pull
    Accessory #3 HL SR2 420mm push/pull
    Marko911's Avatar
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    Quote Originally Posted by Thireus View Post
    Hi guys,

    I can read that several of you are reaching frequencies above 4.5*GHz on all cores. Congratulations.

    I was just wondering one thing, are these frequencies stable under extreme stress testing conditions? And by extreme I mean the following:

    - Running Prime95 v26.6 (non-avx version) blend test 24h
    - Running Prime95 v26.6 (non-avx version) 8K FFT test 20min (to make sure temperatures stay below 94C)
    - Running Prime95 recent version (with AVX) blend test custom 1h for AVX
    - Running y-cruncher HNT stress testing for more than 100 passes to test AVX-512

    I have a 7980XE (so a bit off topic) but I'm currently able to pass all the above Prime95 testing with Vcore offset mode and per-core overclocking, I have a few cores at 42x, some x43, most at 44x and one at 45x.

    The y-cruncher HNT stress test for AVX-512 has been the trickiest one so far. I've had freezes when setting cores at 44x/45x, so I've had to increase LLC for it, for which I'm still trying to find the right value (as I'm writing these lines I have LLC set to 6 and it successfully did 62 passes). Also had to set an AVX-512 offset down to 8 for it...

    Anyone trying to achieve extreme stability or are you guys running softer stability tests?
    Hey,In my opinion,you have decent 7980XE chip.I'm amazed with your results with stock TIM under that chip.But higher core count bigger die makes better contact with IHS
    If you didn't delid your CPU,try it.You will be surprised with results.and I don't think you would need to do avx-512 offset at whooping -8.

  10. #40
    Major Asshattery Array Protocol PC Specs
    Protocol PC Specs
    MotherboardRampage VI Extreme
    Processori9-7940X
    Memory (part number)Corsair Dominator Special Edition Torque - DDR4-3200
    Graphics Card #1EVGA GTX 1080 Ti FTW3 - EK waterblock
    Graphics Card #2EVGA GTX 1080 Ti FTW3 - EK waterblock
    Sound CardOnboard Audio
    MonitorAcer Predator XB321HK
    Storage #1Samsung 960 PRO NVMe
    Storage #2Samsung 960 PRO NVMe
    CPU CoolerEK R6E Monoblock
    CaseCorsair 900D
    Power SupplyCorsair AX1200i
    Keyboard Corsair K90
    Mouse Razer Mamba Tournament Edition
    Headset Astro A40
    Mouse Pad Razer Manticore
    Headset/Speakers Klipsch THX
    OS Windows 10 Pro (Track-Me Edition)
    Network RouterCisco ASA 5515
    Accessory #1 MCP655 PWM Pumps (2)
    Accessory #2 Gold-plated AK
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    Quote Originally Posted by Thireus View Post
    Hi guys,

    I can read that several of you are reaching frequencies above 4.5*GHz on all cores. Congratulations.

    I was just wondering one thing, are these frequencies stable under extreme stress testing conditions? And by extreme I mean the following:

    - Running Prime95 v26.6 (non-avx version) blend test 24h
    - Running Prime95 v26.6 (non-avx version) 8K FFT test 20min (to make sure temperatures stay below 94C)
    - Running Prime95 recent version (with AVX) blend test custom 1h for AVX
    - Running y-cruncher HNT stress testing for more than 100 passes to test AVX-512

    I have a 7980XE (so a bit off topic) but I'm currently able to pass all the above Prime95 testing with Vcore offset mode and per-core overclocking, I have a few cores at 42x, some x43, most at 44x and one at 45x.

    The y-cruncher HNT stress test for AVX-512 has been the trickiest one so far. I've had freezes when setting cores at 44x/45x, so I've had to increase LLC for it, for which I'm still trying to find the right value (as I'm writing these lines I have LLC set to 6 and it successfully did 62 passes). Also had to set an AVX-512 offset down to 8 for it...

    Anyone trying to achieve extreme stability or are you guys running softer stability tests?

    No "forgiving" testing for me. If it won't run any instruction set in any stress program/benchmark/non-synthetic workload at absolute 100 percent for at least 8 hours then I do not consider my system stable. (I only perform 8-hour testing if a smaller 2-hour test passes. Usually minor tweaks over a day or so gets everything dialed in tightly). Being lidded, I am hitting a thermal wall myself. Just can't get enough heat out and into the waterblock/coolant.

    Skylake-X in general suffers from heat-transference issues due to the TIM compound that is used. I'm sure a hefty number of people are able to hit clocks with decent voltage overhead remaining but are reaching the TMAX instead (non-delidded of course).
    | Corsair 900D | i9-7940X @ 4.5 GHz 24/7 (All-Core) | Rampage VI Extreme |
    | 32GB (4x8) Corsair Dominator Special Edition 3200 Kit (14-16-16-36) |
    | EVGA GTX 1080 Ti FTW3 with EK blocks - 2x-SLi | Corsair AXi1200 PSU |
    | 2x Samsung 960 PRO NVMe | Custom Liquid Cooling (Dedicated CPU/VRM - EK Monoblock) vs. VGA Loops | Koolance Fittings |
    | 2x 360mm BlackIce SR-1 Radiators - Push-Pull | 12x Corsair AF-120 Fans |
    | 2x MCP655-PWM Pumps | 2x BitsPower 250mL Reservoirs


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