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post #1 of 13 (permalink) Old 03-23-2019, 10:48 AM - Thread Starter
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[email protected] with Asrock Extreme4, approved?

Hi all, I have just overclocked my 8600k for gaming purposes with an Asrock z370 Extreme4 to 4.8 GHz and I would like to know what do you think about my oc settings/stability. I want a 24/7 oc and I don't want to risk cpu lifespan by oc'ing too much. Also, I live in a warm country and I don't want it to reach too high temperatures in summer.

I have set all cores to 4800 MHz and the CPU cache ratio at 4400 MHz. Long and short duration power limits to 120 and 150 respectively. Offset voltage of 20 mv and llc at level 1 (highest one).

I performed the following tests: 3 runs of Cinebench r20.0 without crashes or BSOD --> Prime95 v29.4 (AVX disabled) 1 hour small FFTs and 30 min blend test without warnings or errors --> RealBench v2.56 stress test 2 times during 15 min with hash match. Temperatures didn't exceed 80ºC during all those tests (iddle temperature remains around 40-50ºC). Voltage VID reached a max of 1.245v (min of 1.200v). No WHEA errors detected.

I've been playing The Division 2 for 2 hours, Overwatch for 1 hour and Metro Exodus for another hour without crashes and cpu temperature was always below 70ºC (1.245v max).

What do you think? Should I do something else? Thanks a lot for your time!!!!!!!!!!!!

PC: i5-8600k, Asrock z370 Extreme 4, 2x8gb ddr4 G.Skill Ripjaws VSeries 3200 cas16, PSU Corsair RM650x, Noctua nh-d14, 2xSamsung Evo 850 500gb ssd, case Corsair c70.

Last edited by SydB12; 03-23-2019 at 10:54 AM.
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post #2 of 13 (permalink) Old 03-23-2019, 11:10 AM
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It should be perfectly fine. I've been running my 8700K @5.2Ghz with no issues.

Did you happen to upgrade to the latest BIOS by any chance? And if so, do you notice any differences? I'm on 3.10 and 3.30 has been out for a while. I've had 0 issues so I don't have the urge to update.
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post #3 of 13 (permalink) Old 03-23-2019, 11:22 AM - Thread Starter
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That's actually a good question that I didn't consider before. I've just checked and my bios version is the 1.30 dating from 2017/11/30.

I have seen that there was a security update with version 1.60 (2018/3/2 Update CPU Microcode to revision 84. (For CPU security update)).

So far my system is running fine with the current bios. How important is this update? Would you update it? I thought bios updates followed this rule: If it ain't broke, don't fix it.

Cheers!

EDIT: it seems that the update 1.60 is for the Spectre-Meltdown flaws. Still not sure about what to do as I don't want to be unsafe, but I don't want t a decrease in performance.

EDIT 2: Well, answering my own question, after running InSpectre software I have checked that I am already protected against Spectre and Meltdown by Windows. Therefore, if the forum thinks the overclock is well done, then I won't update my bios. Everything seems to work fine as it is.

Thanks!!!


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post #4 of 13 (permalink) Old 03-23-2019, 11:46 AM
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The VID doesn't matter, the vcore is what the chip actually gets. If you're using less than 1.4v all that matters is stability. If it's stable it's good.
LLC doesn't need to be on it's highest setting and usually having it there is a bad idea because every time a load hits, the board is cramming extra voltage into the entire CPU. Try using the setting that's in the middle or one step below.


The microcode usually has a negligible impact on storage performance. Use it if you want, don't if you don't.

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post #5 of 13 (permalink) Old 03-23-2019, 12:05 PM - Thread Starter
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Thanks, I was checking the wrong info then. In HWinfo64 there are several sections displaying info about my cpu:

"CPU [#0]: Intel Core i5-8600K", here is where I was reading the wrong voltage and where 6 different core VID appear.

"ASRock Z370 Extreme4 (Nuvoton NCT6791D)", here is where there's a reading for vcore. Is this the one I should take care about? If so, I will repeat all stress tests checking the proper vcore value and lowering the llc and then I will post the results again.

Cheers!

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post #6 of 13 (permalink) Old 03-23-2019, 12:16 PM
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It's obviously stable at whatever vcore it's using but it's important to know which to look at, especially when you're using Adaptive or Offset while stressing. VID is what the CPU is requesting but the board modifies this or ignores it depending on settings while vcore is what your cores will actually be getting.

Changing LLC shouldn't have a massive impact unless the board was using a really high value on that setting. Since you're only doing core and cache you can run Small FFT, you don't really need Blend here.

If you pull up HWinfo then run a stress test just look at your vcore, it should top out within a few seconds and now you know your core voltage. There may or may not be 6 of them. Changing LLC may not impact your vcore in a significant way, often what LLC does happens too fast for you to really see it in hardware. Intel has it's own load line setting and that's the one you want to use, usually this is in the middle. The board is just using that value and offsetting it to make it more or less aggressive and there's really no reason to use mare than Intel's spec on a daily OC.

Quote: Originally Posted by SpeedyVT
If you're not doing extreme things to parts for the sake of extreme things regardless of the part you're not a real overclocker.
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The key is generally not which brands are good but which specific products are. Motherboards and GPUs are perfect examples of companies having everything from golden to garbage function/quality.
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Last edited by white owl; 03-23-2019 at 12:24 PM.
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post #7 of 13 (permalink) Old 03-23-2019, 12:21 PM
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vCore is inaccurate for a lot of Z390s. See if your board has a VR VOUT sensor somewhere in HWInfo and go by that.

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post #8 of 13 (permalink) Old 03-23-2019, 12:48 PM - Thread Starter
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I have decreased llc to the second highest value (there are 5 llc values) and temperatures after 15min Prime95 smallFFT have decreased! I don't understand why, but hey, i'm not an expert. I will test now the middle llc value.

In HWinfo64: Vcore min= 1.152v, Vcore max= 1.232v, Vcore avg= 1.185v. VRout min= 1.132v, VRout max= 1.217v, VRout avg= 1.164v.

I think I have an stable and non-risky overclock, isn't it? Thanks!


Last edited by SydB12; 03-23-2019 at 01:11 PM.
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post #9 of 13 (permalink) Old 03-23-2019, 01:28 PM - Thread Starter
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Same results with llc in the middle value (i.e. 3). vcore don't exceed 1.232v and temperatures are in the 70ºC range. I think i'm happy with the result.

Thanks for your advice!

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post #10 of 13 (permalink) Old 03-23-2019, 01:55 PM - Thread Starter
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Sorry, I have another question. The minimum Vcore drops down to 0.610v. Is that ok? Ty!

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