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  1. #1
    ROG Junior Member Array
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    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
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    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
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    Hi,

    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.



    https://www.overclock.net/forum/27686004-post2664.html

  4. #4
    ROG Junior Member Array
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    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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