Trying to undervolt my 14900KS, but it won’t stay stable at -0.05. Seems to stabilize around -0.035 instead. Is that normal? Seems people can push way beyond this…

I'm using most of the same settings from this guide:
https://www.youtube.com/watch?v=uHh4HZGK3O4&t=609s
Only real difference is I'm running 320W instead of the default 253W PL1/PL2.

System Specs:

  • CPU: 14900KS
  • Cooler: Arctic Freezer II 360 AIO
  • Motherboard: ASUS Z790 Dark Hero
  • RAM: 32GB DDR5 7200MT/s

Running OCCT (CPU + RAM) and getting errors after 15–20 mins.
Any tips or thoughts on this behavior? Appreciate any help.

2 Comments

  1. usone32

    It depends what clock speed you’re trying to run at. You can’t run it at 5.9 at -0.030, but you can run it at 5.2 with -0.130 for example. There are other settings that affect how much you can undervolt.

  2. Well for a start, he’s using a 14900K and not a 14900KS, the KS clocks higher and requires a notable amount more voltage from the higher clocks.

    The other thing is, everyone’s silicon quality is different and one persons undervolt is not guaranteed at all to work with someone else’s.

    Besides that, I’d like to think you didn’t purchase a 14900KS to lock all cores to 5.5… it defeats the entire purpose of spending so much more money.

    Above all else, that’s not exactly what I would recommend to be the best of guides, I mean who on this planet is running a 14900k on loadline level 4 to even start with. There are only 2 options for these CPU’s, level 5 and level 6.

    What exactly is your goal with the undervolt? Temp reduction? I suggest an alternative route to following that video. Also, don’t underestimate your ram being a contributing factor, especially if you’re running the tweaked XMP profile.

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