Offset Mode, Load Calibration on Z170 Asus motherboard

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apps.report.gc

Aug 14, 2018
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Hi,
I'm trying to understand how offset-mode works and how to set also the load calibration. I've seen a lot of videos about and I understand quite little about load calibration settings.

Offset mode seems to lower every voltage it gives to Cpu and my question is:
If I am stable with a core voltage of 1.250 volts how can I set the correct (minus) offset? How could I know the maximum voltage it gives to the processor? It seems that no bios settings give this information and I have to know this max vcore in stress tests like aida64. I have to guess every time? Who is saying to put vcore at 1.28v?

When I switch to offset mode I notice ad high voltage bound of 1.28 volts for a 4.2 Ghz overclock with a 6600k. I want to try also downvoltage to 1.25v but if I subtract for example 0.05 it will adjust every core voltage (because I'm using also speedstep from intel) and the lower bound voltage is less of 0.7v

I'm asking how can I still reduce voltage and frequency as CPU load decreases and if there is a way to don't give always a fixed voltage of 1.25v.


The loadcalibration is the other thing, I saw on youtube information about and it seems to adjust voltage drops when cpu is under load. I notice that when it try to give a voltage correction, it exceeds the stock intel VID and I think it could be dangerous because we can't monitor it.

Can you give me advice on how to make an overclock for my configuration with a i5 6660k up to 4.2 ghz, with a vcore 1.25v saving the feature of decreasing power and frequency on demand. The motherboard is an asus pro gaming z170. What loadline I have to set? Is it safe to leave it to auto?

 
Solution
Darkbreeze
Those are just usage spikes.

I'm not sure what you're using to test thermals or stability, but for thermals you SHOULD be using Prime95 version 26.6 and running the Small FFT option. That will give you a steady state load, and there will be no spikes like you are seeing above.

If you read the tutorial I linked to, much of this is explained in there.

PSU was pretty fair, when it was new. So unless there are obvious issues I'd say you're good enough in that regard.
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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1.25v is not acceptable for Skylake i5 and i7 processors where the stock voltage is already 1.3v by default. Any overclock, at all, should send the voltage up, not down, from there.

My guess is that a good starting place for you, and of course we are talking about what you set the voltage to in the bios, not what you are seeing as vcore or vid in your monitoring software, would be 4.2Ghz with about 1.310v and a load line calibration of standard or auto. 200mhz is not enough to significantly affect line load to the degree where a higher calibration should be necessary if you have a good motherboard.

There are some other considerations as well. Also, with a 1.25v vcore it's probable that your overclock will not be stable, and you won't know that until you do some extensive testing.

What is your power supply model number?

Pro gaming isn't a really high end overclocking board, but for that overclock it should be fine.

I'm currently working on a beginners overclocking tutorial and while it isn't finished yet by a long shot, you might find some of the information there, specifically on testing the stability and thermal compliance, of some use.

http://www.tomshardware.com/faq/id-3761568/cpu-overclocking-guide-beginners-progress-complete.html

 
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Darkbreeze

Darkbreeze

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Might also want to take a look at this thread, only to the effect that relevant voltage discussion occurs about halfway down the page. Pay no attention to the post from the guy saying that 1.3v is the max voltage. It's not. It's the max stock Turbo voltage, maybe. I've actually seen voltages all around 1.3v at stock configuration, both higher and lower.

Most Skylake processors I've worked with so far have seen stability at about 4.5Ghz with 1.35v vcore and standard or auto line load calibration. Higher line load calibration is useful, but only with specific offsets and there can be a severe thermal penalty involved.

http://www.tomshardware.com/answers/id-3083420/6600k-stock-voltage-overclock-question.html
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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1.25v is not acceptable for Skylake i5 and i7 processors where the stock voltage is already 1.3v by default. Any overclock, at all, should send the voltage up, not down, from there.

My guess is that a good starting place for you, and of course we are talking about what you set the voltage to in the bios, not what you are seeing as vcore or vid in your monitoring software, would be 4.2Ghz with about 1.310v and a load line calibration of standard or auto. 200mhz is not enough to significantly affect line load to the degree where a higher calibration should be necessary if you have a good motherboard.

There are some other considerations as well. Also, with a 1.25v vcore it's probable that your overclock will not be stable, and you won't know that until you do some extensive testing.

What is your power supply model number?

Pro gaming isn't a really high end overclocking board, but for that overclock it should be fine.

I'm currently working on a beginners overclocking tutorial and while it isn't finished yet by a long shot, you might find some of the information there, specifically on testing the stability and thermal compliance, of some use.

http://www.tomshardware.com/faq/id-3761568/cpu-overclocking-guide-beginners-progress-complete.html

Furthermore, you would be well advised to take a look at, and learn, as much as possible from the information at the following link:

http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
 
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apps.report.gc

Aug 14, 2018
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My i5 6600k runs at stock condition of 1.2v as maximum and it sets up a 3.9Ghz core, another one 3,8.. 3.7.. 3.6 and so on ( it decreases ).
Its current vcore range is 0.7 - 1.2 (considering the idle and speedstep function)

I have a xfx 650W
 
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Darkbreeze

Darkbreeze

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Ok. But what model of XFX? Older ones were made by Seasonic. Newer ones, like the XT series are made by Shenzhen Rui Sheng Yuan Technology, which used to manufacture units for Rasurbo, Ultra or old Topower. Not very good at all, just FYI.

You're right, the stock voltage for a completely vanilla configuration is a max of 1.25v. However, if you set the multiplier to 42 and turn off turbo features and leave the voltage setting to the system (Auto), you'll see something around 1.3v or slightly higher. 1.3-1.310v is probably a safe bet for a 4.2Ghz OC on Skylake i5's. You can play around with the voltage but thermal compliance and stability results should be the only factors that determine WHERE the voltage ends up at and only after in depth testing for verification purposes.

8 hours of Realbench and 8 hours of Prime95 version 26.6 Blend mode once you've settled on a frequency you're happy with. 15 minutes of Prime95 version 26.6 to test thermal compliance. If it can pass at a given voltage, for ALL 8 hours of each test, and for 15 minutes of thermal testing, THEN you can reduce your voltage if you think you might gain some thermal headroom that way, and then retest to verify it still stable. Otherwise, might as well just be guessing.
 
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apps.report.gc

Aug 14, 2018
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Hey darkbreeze sorry if I answer this late but I wasn't reading or connecting today. Before reading your answer i was doing this:

I rebooted into bios and put Performance Auto-config, so it sets up cooling system to air etc.. giving me the option to keep speed step and the vcore down-voltage function. Then I setup my ram speed to 2400 (as they are in stock manufacturer condition) and put a offset of -0.05v so if it goes up to 1280 i will subtract -0.05, also in idle mode (circa 0.685v). Now I am doing aida test while writing to you. PCH again got crazy readings but I hope it's the test.
I put also every core to 4.2ghz not anymore the scale like 43, 42, 41, 41.

what do you think?
Vcore
rnejvb2.png

https://imgur.com/a/BN2veKw
pch
HQcaNPj.png

https://imgur.com/a/YSl4XLz
AIDA
y326bja.png

https://imgur.com/a/h6rQXn9
cpuz1
YxBeSCj.png

https://imgur.com/a/JF2BftV
cpuz2
PPDojzp.png

https://imgur.com/a/2IqJE7K

I need also to do your advises I think with those benchmarks. I am not at 20 minutes circa of aida..

My psu is a XFX P1-650G-TS3X
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
80,411
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176,790
Those are just usage spikes.

I'm not sure what you're using to test thermals or stability, but for thermals you SHOULD be using Prime95 version 26.6 and running the Small FFT option. That will give you a steady state load, and there will be no spikes like you are seeing above.

If you read the tutorial I linked to, much of this is explained in there.

PSU was pretty fair, when it was new. So unless there are obvious issues I'd say you're good enough in that regard.
 
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Solution
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apps.report.gc

Aug 14, 2018
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Ok thank you I will let you know


 
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