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  1. #1
    ROG Junior Member Array
    Join Date
    Feb 2017

    Extreme xi huge vdroop

    I think my board is f'ed. Installed it yesterday. 9900k. Seeing vdroop from 1.35 down to 1.30 under load. Setting the voltage manually. LLC 7. LLC 8 does no better. I can't get an overshoot even if I wanted it. Crashes my system every time. Disappointed. Anyone else experience this problem?

  2. #2
    ROG Member Array Aurosonic PC Specs
    Aurosonic PC Specs
    Laptop (Model)ASUS G501VW
    MotherboardASUS ROG MAXIMUS APEX XI bios 0231
    ProcessorIntel i9-9900k delided 5200@1.35v LLC5
    Memory (part number)2x8gb G.Skill Trident Z RGB F4-4600C18D-16GTZR @ 4600Mhz 17-19-19-38 CR2
    Graphics Card #1Gigabyte AORUS GeForce RTX™ 2080 Ti XTREME WATERFORCE WB 11G @2100/8100
    Sound CardRME Fireface UC
    Monitor2x Asus PG278Q
    Storage #1M.2 Samsung 970 Pro 512gb
    Storage #2M.2 Samsung 970 Evo 2Tb
    CPU CoolerEK-Velocity RGB - Nickel / Custom Watercooling
    CaseCaseLabs SMA8 custom
    Power SupplyCORSAIR AX1500i custom cablemod
    Keyboard Steelseries APEX RAW
    Mouse Logitech G9x Laser
    Headset Sennheiser HD250
    Mouse Pad Zowie
    Headset/Speakers Blue Sky Mediadesk 2.1
    OS Windows 10 1809
    Accessory #1 MO-RA3 Pro 4x180 Radiator, 2xD5 pumps
    Accessory #2 Hardtubing 13/10 custom waterloop
    Accessory #3 Bitspower fittings
    Aurosonic's Avatar
    Join Date
    Jun 2015

    Both of my Formula XI and APEX XI doesn't overshoot either and on both vdroop is the same. LLC6 with Linpack load i got vdroop from 1.330v to 1.234v, LLC7 to 1.244v and i think it's okay according to CPU load. Under Linpack i'm getting 300W CPU powerpackage and 550GFlops perfomance.
    9900k@5200@1.35v LLC5/Apex XI@0231/G-Skill F4-4600C18D-16GTZR/Aorus 2080ti xTream Wateblock@2100/8100

  3. #3
    Administrator Array Silent Scone@ASUS's Avatar
    Join Date
    Mar 2016


    This has been covered quite extensively already. This is due to how the measurements are taken, as the boards are now using differential measurement rather than socket sense.

  4. #4
    ROG Junior Member Array
    Join Date
    Feb 2017

    Thanks for the reply's. Something was wrong with the first board I posted about. The drop was much more than expected and was causing some serious crashing. The replacement board works perfectly. I'm back to stable at 5.4 @ 1.4 at LLC 7 with a normal drop to 1.368 under load. I was more than relieved when the new board ran as expected.

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