Overclocking Z390

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  1. N00berG00ber's Avatar
    Posts : 424
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       #1

    Overclocking Z390


    So I'm trying to get 5ghz stable on all 8 cores and I'm running into some issues. So it seems that 1.265v is enough for 5ghz, however this is only in offset mode. I can't get adaptive to work. No matter my negative values I input, CPU is stuck at 1.38v. The only thing that works too change college lower is setting a higher LLC. I've heard adaptive does not support voltages lower than what the cpu is capable of. I'd this y it's not working? Also on an Asus board, there a lot more options then I'm use to! What settings effect overclocks the most?
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  2. N00berG00ber's Avatar
    Posts : 424
    Windows 10 Home
    Thread Starter
       #2

    So I e been playing around with adaptive vs offset voltages. Seems an adaptive voltage of -.120 is yeilding me lower voltages overall without instability. With an offset voltage, I had to keep bumping my vcore up into the 1.3v area because it kept crashing on desktop doing normal everyday stuff. Now on adaptive, I'm sitting at 1.243v level 7 LLC and still going down in voltage for 5GHz.

    Max temps are around 75c in Asus real bench stress test. (I have to buy better thermal paste and replace it)

    I do think I finally got a golden chip after all these years! Lol but temps are still high.
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  3. ThrashZone's Avatar
    Posts : 7,108
    3-Win-7Prox64 2-Win10Prox64
       #3

    Hi,
    Depends on which adaptive setting
    There are two
    Offset and turbo
    Offset you might try it's lowest -0.001 then do the rest on the turbo
    llc 7 I would avoid vdroop is too little
    llc 6 or 5 might be best but these effect vccin or input voltage it has to be high enough as well so what is input set at ?

    Cliff posted his bios text on the hardware thread possibly you can get some hints off of it be aware these are 9900k settings
    2018 Hardware Thread [2] - Page 15 - Windows 10 Forums
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  4. N00berG00ber's Avatar
    Posts : 424
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    Thread Starter
       #4

    I'll check it out, thanks.

    At this point, I'm stable with an offset voltage of 1.270 Max with LLC 7. During load it's 1.252v. I have a few more tweaks to try first. My issue now is temps. I don't think that the cooler is set correctly, I'm getting 70+c in BF5.

    If I use adaptive voltage, unless it's a + offset, I can not use turbo settings. It won't effect voltage. I have to use offset which lowers the base voltage and causes instability. It normally idles at . 755v and for it to be stable at 5 GHz, it causes it to idle at . 652v which makes it crash when idle.
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  5. N00berG00ber's Avatar
    Posts : 424
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    Thread Starter
       #5

    So setting the AC and DC LLC to 0.01 has helped so much with voltage stability. I'm now at 1.261V at 5GHz. Still testing but I ran cinebench and got 1513 as a score. Still have a few more adjustments to make.
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  6. ThrashZone's Avatar
    Posts : 7,108
    3-Win-7Prox64 2-Win10Prox64
       #6

    Hi,
    That's sort of the deal with adaptive if too high or not enough the settings are ignored + or -.

    llc7 doesn't have much vdroop so 6 is usually better just increase vccin or input a little depending on where that voltages is at check the min max vccin voltages with hwinfo free.
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  7. N00berG00ber's Avatar
    Posts : 424
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    Thread Starter
       #7

    I'll check the vccin

    I'm not a big fan of vdroop. So that's why I like higher LLC and lower overall voltage.

    But it's looking pretty good now. Seems like I have a goodchio. It just gets toasty. Hitting 78c in Asus real bench and 85c in Asus stress tests.

    I ordered some better thermal paste and a higher watt PSU. So when I tear it apart again, I'll reseat the whole cooler and mounting
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  8. ThrashZone's Avatar
    Posts : 7,108
    3-Win-7Prox64 2-Win10Prox64
       #8

    Hi,
    Auto vccin usually adds too much and can also cause instability especially using a high llc.
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  9. N00berG00ber's Avatar
    Posts : 424
    Windows 10 Home
    Thread Starter
       #9

    Vccio is at 1.312. I can't find a vccin voltage
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  10. ThrashZone's Avatar
    Posts : 7,108
    3-Win-7Prox64 2-Win10Prox64
       #10

    Hi,
    What are you using should be in hwinfo free in the voltage sensors listings


    Overclocking Z390-image.png
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