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Extreme xi huge vdroop

lacklusterog
Level 7

‎03-03-2019 11:41 AM - last edited on ‎03-06-2024 08:35 PM by Community Admin

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?
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3 REPLIES 3

Aurosonic
Level 7

‎03-06-2019 05:27 AM

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
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Silent_Scone
Super Moderator

‎03-06-2019 08:08 AM

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
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090
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lacklusterog
Level 7
In response to Silent_Scone

‎03-13-2019 05:08 PM

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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