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Helpful ReplyRandom Reboots On X299 FTW K and a 10940X

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arestavo
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2020/05/22 08:41:10 (permalink)
So, I've done a lot of digging around since overclocking these 109xx X chips seem to vary a bit from the 79xx X and even 99xx X chips, and especially the older intel chips (mesh...ugh!).

One thing that I've run into many times is that a mesh of 32, or 3200MHz, is supposedly the go to - it always works, totally safe.

Thing is, after a month of tweaking things, it appears to not be the case for my 10940X. Anything from the EVGA BIOS OC tools settings (per core or all core), to my own tweaks - I've finally narrowed down the random reboot problem that I had when OCing the CPU: the mesh multiplier.

Sadly, tweaking the mesh voltage to others' recommended voltage didn't stabilize it. Nor did leaving it at auto.

So, I've since set my mesh to 30 (3000MHz) I have noticed a LARGE increase in my synthetic benchmark numbers at a lower CPU overclock, and have had random reboots in Modern Warfare's Warzone stop.

I'll be doing some more tweaking (3400MHz ram OC (2800MHz rated chips), 31 mesh frequency, and higher than the 4.6GHz all core OC), but if anyone has their own experience to share with mesh overclocking (especially on the 109xx X chips) or other OC tips, I'd love to hear it since most of the info out there is for the previous two chip lines.
post edited by arestavo - 2020/05/23 07:32:00
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    arestavo
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/23 07:27:20 (permalink)
    So while tweaking things, looking to see about a 4.7GHz all core OC, I found a bug (am I holding it wrong?).

    My 4.6GHz OC seems rock solid at 1.17V override (80C was the hottest core), but 4.7GHz will crash. I needed more volts, looked like. So, I decide to try adaptive voltage starting at 1.2V with 0 offset. Why? Why not, since adaptive voltage starts out at 1.2V.

    Was it 1.2V though? Nope. Come to find out, after cooking my CPU at 100 to 104C in cinebench, it was actually setting 1.32V per the BIOS reading. When I first started OCing with this board/CPU, I tried a negative offset with the minimum 1.2V adaptive setting - but it would crash at any OC - so that's out.

    Back to voltage override. This is stupid.
    post edited by arestavo - 2020/05/23 07:36:02
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    arestavo
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/23 09:04:28 (permalink)
    Come to find out, that crash at 4.7GHz was actually the mesh, even set to 30, causing instabilities in some stress tests (computer screen blanks, PC never reboots, pressing restart button does nothing - hard reboot required). Setting the mesh to auto, instead of 30, further increased my synthetic benchmark numbers.
     
    So, I'm joining the cult of "I Hate Mesh"
    post edited by arestavo - 2020/05/23 09:26:05
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    DEJ915
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/23 11:50:18 (permalink) ☄ Helpfulby arestavo 2020/05/23 14:02:21
    The 10940x has VID (intel programmed voltage) up to 48x ratio as that is turbo boost 3 speed for that CPU so adaptive will ignore what you set until you hit 49x multiplier.  It is best to use manual override for the 10 series because of this, the 9 series as example had 45x turbo boost 3 so we didn't run into this issue as much.
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    Cool GTX
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/23 12:57:41 (permalink)
    DEJ915
    The 10940x has VID (intel programmed voltage) up to 48x ratio as that is turbo boost 3 speed for that CPU so adaptive will ignore what you set until you hit 49x multiplier.  It is best to use manual override for the 10 series because of this, the 9 series as example had 45x turbo boost 3 so we didn't run into this issue as much.


    thanks for the info

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    ZoranC
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/24 18:36:13 (permalink)
    Full Disclaimer: I have zero experience with overclocking
     
    I have 10900x. My extent of "overclocking" it is that I have picked EVGA's 'PerCore ratio' of 43 for all cores and left everything else at defaults. That means mesh is left at 'Auto' which in turn translates to 30 (EVGA's default for this setting). I've had zero problems with stability at these settings regardless of how many hours of stress and which program I was subjecting it to.
     
    Moment I tried to use x32 for mesh things would start crashing no matter which guide I tried to followe. So in the end I gave up. Yeah, having mesh at x32 was giving me beautiful responsiveness of "wheeee, this flies" kind but in the end it was obvious it won't happen for me.
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    KrikU
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/05/25 07:10:23 (permalink)
    DEJ915
    The 10940x has VID (intel programmed voltage) up to 48x ratio as that is turbo boost 3 speed for that CPU so adaptive will ignore what you set until you hit 49x multiplier.  It is best to use manual override for the 10 series because of this, the 9 series as example had 45x turbo boost 3 so we didn't run into this issue as much.




    Can anyone please explain this difference in more detail between 7xxx 9xxx and 10xxx series CPU-s
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    Monstieur
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/10/01 22:43:46 (permalink)
    AVX-512 loads crash the mesh easily. I found the CPU Load test in Intel PDT crashed the mesh in seconds, compared to other AVX-512 tests like Prime95 or Linpack Xtreme which took minutes or throttled instead of crashing.
    On my 10900X & X299 Dark, 30x Mesh requires 1.1 V Vmesh & 1.1 V VCCIO. 32x Mesh requires 1.2 V Vmesh & 1.175 V VCCIO.
     
    KrikU
    Can anyone please explain this difference in more detail between 7xxx 9xxx and 10xxx series CPU-s

    The VID table contains voltages for different ratios that are factory-tested to be stable. As long as a VID exists for the ratio you set, you can just use Adaptive voltage without overvolting. This should be stable under any load including Prime95 non-AVX, provided you can cool the CPU. The maximum VID is at the Turbo Boost Max 3.0 ratio. If you exceed this ratio the CPU will likely be unstable and require overvolting.
     
    The exception is AVX2 and AVX-512. If you increase the AVX ratios from stock, the VID will not be stable. Most motherboards increase the AVX ratios out of the box, resulting in an unstable CPU in AVX stress tests. Use HWiNFO to read the factory AVX ratios and set them in the UEFI manually. If you increase the AVX ratios, the only way to increase AVX ratio voltage is using Adaptive + Offset mode with a +ve offset. Only the offset component will be added to the VID at the AVX ratio. The adaptive voltage set (even if higher) will be ignored below the Turbo Boost Max 3.0 ratio.
    post edited by Monstieur - 2020/10/01 22:50:00
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    themlharris
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    Re: Random Reboots On X299 FTW K and a 109040X 2020/10/02 00:08:33 (permalink)
    This is a headache
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