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  1. #11
    ROG Guru: Blue Belt Array mdzcpa PC Specs
    mdzcpa PC Specs
    MotherboardMaximus Hero XI
    Processor9900k @ 5.1Ghz All Core 1.315v AVX -2
    Memory (part number)Gskill GTZ 4133 C17 32GB (4x8GB)
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    Quote Originally Posted by Jaz11 View Post
    Hey did anyone find a fix for this?

    My xi formula is the same. Set 1.33v bios and get 1.27v under load llc7
    There is no fix as this is normal behavior for the bird. LLC 8 is needed for no droop. *Just be careful of the potential overshoot on voltage transition. Some droop is a good idea for daily systems.*

  2. #12
    ROG Guru: Yellow Belt Array Zammin PC Specs
    Zammin PC Specs
    MotherboardASUS ROG Maximus XI Formula
    ProcessorIntel 9900K (Conductonaut Applied)
    Memory (part number)G Skill 3200Mhz Trident Z RGB 32GB 3200Mhz CL16
    Graphics Card #1RTX 2080Ti FE
    MonitorAcer Predator XB271HU 165Hz
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    CPU CoolerEKWB Velocity RGB
    CaseLian Li PC-011 Dynamic
    Power SupplyCorsair RM1000i
    Keyboard Corsair K95 Platinum RGB
    Mouse Steel Series Rival 600
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    So it's not just me experiencing this. Same deal when I was playing around with manual voltage on 9900k and XI Formula, even with LLC7 there is notable Vdroop. I'll have to try adaptive and setting SVID behavior to best case and see if anything changes.

    EDIT: Whoops, didn't see the posts above. I'll have a read of Elmors post on OCN first.

  3. #13
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    Yep, same on my Hero XI which has the same VRM. I mean it works fine, but the amount of droop at LLC7 is a little frustrating. I'm stable at 5.1GHz at 1.305v adaptive with AC & DC LL set to .01. Under max load my vcore reading drops to around 1.25v or slightly over. Are we supposed to use LLC8 and just set way lower voltages?

    Edit: Looks like Elmor is saying over on overclock.net that the M11 is just measuring vcore more accurately and closer to the CPU than most other boards. I've asked him to clarify since I don't think the post he made earlier was entirely clear about that. It explained the new way Asus measuers vcore, but it didn't really say that every other board out there does it differently and will show way higher vcore readings under load, which I think is what he just implied.

    https://www.overclock.net/forum/5-in...l#post27736012


    So assuming that is correct, if you were actually able to measure voltage at the CPU with a meter you'd see vdroop similar to the M11 boards on most/all competing boards. At least in the same ballpark, subject to variations for VRM design and so forth.
    Last edited by tostitobandito; 11-29-2018 at 05:09 AM.

  4. #14
    Tech Marketing Manager HQ Array Raja@ASUS's Avatar
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    Quote Originally Posted by tostitobandito View Post
    So assuming that is correct, if you were actually able to measure voltage at the CPU with a meter you'd see vdroop similar to the M11 boards on most/all competing boards. At least in the same ballpark, subject to variations for VRM design and so forth.

    Yep, that is what it means.

  5. #15
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    So essentially other boards just arent reading their actual load vcore as accurate as the asus?

    Mine seems extreme. 1.34v llc7 bios and droops to 1.27...

  6. #16
    Tech Marketing Manager HQ Array Raja@ASUS's Avatar
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    Quote Originally Posted by Jaz11 View Post
    So essentially other boards just arent reading their actual load vcore as accurate as the asus?

    Mine seems extreme. 1.34v llc7 bios and droops to 1.27...
    Currently, no other vendor utilizes differential sensing directly from the pins, so the reading on will be less accurate. All else being equal, on a board that uses conventional sensing, the sag would be more masked (the actual magnitude depends on the sense location).
    Last edited by Raja@ASUS; 12-01-2018 at 02:45 AM.

  7. #17
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    So asus vrm reads the voltage differently and more accurate showing the droop?

  8. #18
    ROG Guru: Orange Belt Array geneo PC Specs
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    MotherboardMaximus X Code
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    yes

  9. #19
    ROG Guru: Blue Belt Array mdzcpa PC Specs
    mdzcpa PC Specs
    MotherboardMaximus Hero XI
    Processor9900k @ 5.1Ghz All Core 1.315v AVX -2
    Memory (part number)Gskill GTZ 4133 C17 32GB (4x8GB)
    Graphics Card #1ROG Strix 2080 TI OC
    Sound CardOn Board
    MonitorROG PG348Q
    Storage #1Samsung 970 Pro M.2 512GB for OS & APPS
    Storage #2Samsung 970 Pro M.2 1TB for GAMES
    CPU CoolerROG Ryujin 360
    CasePhanteks Evolv X
    Power SupplySeasonic Prime 1000W Titanium
    Keyboard Corsair K70 LUX RGB
    Mouse Corsair M65 RGB
    Headset Corsaur VOID Pro
    Mouse Pad Corsair MM300 Wide Desk Mat
    OS WIN 10 Pro
    Network RouterLinksys VELOP
    Accessory #1 ROG 751JY Laptop for Moobile Gaming
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    Yes, the other brands do not report as accurately compared to the new XI series ROG boards. So what we are seeing now is closer to the real voltage and vdroop.

    It makes sense as well. When I compare the lowest stable reported voltage on the Hero XI for a given CPU to the lowest stable reported voltage on "another brand" it appears that the Hero XI required stable voltage is much lower. But that is not what's happening. The other board is simply inferring a less accurate higher voltage. In order to get the other brand to report the same loaded voltage as the Hero XI you need to drop voltage down about another 100mv at LLC 6. However this results in unstable voltage levels for the chip.

    Bottom line: the cpu is actually seeing the same voltage levels on both boards at set voltage levels at LLC 6, but the Hero XI reports a lower more accurate voltage. Now, this may encourage some users to crank up the voltage more, or push the LLC to 7 or 8, but I would caution against that. Some vdroop is good. Instead just be aware that your chip will appear to run stable on lower voltages with more vdroop than you might have been accustomed to seeing.

  10. #20
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    New bios just uploaded today. I will give it a go after work. Patch notes look promising but i doubt it will drastically change anything

    "Version 0602
    2018/10/318.52 MBytes
    ROG MAXIMUS XI FORMULA BIOS 0602
    - Improved system stability and performance.
    - Updated Microcode for 8-core CPU.
    - Improved DRAM stability.
    - Fixed USB device issue."

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