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Kaby Lake Overclocking Guide [With Statistics]

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post #21 of 5012 (permalink) Old 01-22-2017, 07:21 PM
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Quote:
Originally Posted by Darkwizzie View Post

It would be, yes. But I'm not sure if I want to do that. The requirements were set with no avx offset in mind. If somebody made an offset it would allow them to pass an overclock that I do not consider to be stable.
yes they would. all the requirement tests you have use AVX to a varying degree. So, if one had a 52 multi set with an AVX offset of 4, most stresstests in the list will actually run at 4.8. CPu freq would appear to be 5.2, but with AVX in the stack, it would run at 4.8. smile.gif

Quote:
Originally Posted by Darkwizzie View Post

Something funny happened to me today. Running 7600k on z170 Asus Hero.

At 100.9 bclk x 52 core mult everything looked normal.
At 101.0 bclk x 52 core temps go up 40C. The same applies to 100 x 53, so it's not the bclk. 


I've never seen anything like this before. In the picture below it was 100.8 bclk on the left, forgot to take picture of 100.9.



disable bclk linked voltage in bios. the Hero would have this with the most recent bios.

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post #22 of 5012 (permalink) Old 01-22-2017, 10:45 PM - Thread Starter
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post #23 of 5012 (permalink) Old 01-23-2017, 01:04 AM - Thread Starter
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Quote:
Originally Posted by done12many2 View Post

Out of general curiosity, why do the stability requirements differ between the Skylake thread and the Kaby Lake thread?

It seems that stability requirements have doubled for Kaby Lake in some test with all test requiring longer runs across the board. Would this not skew statistics and more importantly average clock speeds reported when comparing the two families?


Skylake stability requirements


Kaby Lake stability requirements

The variation has nothing to do with the differences between the chips. I just decided to increase the requirements. (Of course, raising it on everyone over a year after Skylake came out would cause problems.) I haven't considered the effect that will have on comparing the average clocks of both chips. That is a thing, but at the same time my main problem is whether the requirements are stringent enough. I'm still thinking about it. Probably Prime and OCCT can drop back down, and x264/realbench can stay 8hr?

 

Quote:

Originally Posted by happycat View Post

I wanted a stable everyday OC. With [email protected] I was getting acceptable temps during stress testing, average high 70's with the occasional spike to the low 80's.

You have been charted, thanks!

 

Sample Size 2  
Average OC 5 Median OC 5
Average Vcore 1.314 Median Vcore 1.314

 

Quote:
Originally Posted by Jpmboy View Post
disable bclk linked voltage in bios. the Hero would have this with the most recent bios.

But I'm not using adaptive voltage, I'm using manual. With it on I didn't see any change.

Quote:
Originally Posted by TomcatV View Post


+R for your concise AVX/Cache clock explanations AND continuing your fine overclocking guides! thumb.gif 

The sentiment is appreciated!

Quote:
 ... BUT I have to disagree with NOT expanding the Benchmark to include the AVX bios downclock category! It is quite the improvement in the new Z270 bios' and makes complete sense, and Top-Overclockers agree! I know it's a Pi? But these offsets are even being included in top overclocker profiles like der8auer and popular Asus OC profiles, Raja is heavily promoting it in THIS thread etc etc ... just saying you will eventually want to do it, so might as well get started on it now as IMHO it will be a never ending request redface.gif

But what you're essentially doing is bypassing the stress test while still using stress testing to consider something stable. Even with x264 there were people complaining that it's not a tough enough test. If I even drop those kinds of stuff then what is left to even use as a test?
 

With the current pace the thread will not gain enough traction for me to get any requests at all. ;)

Although I have to say, nowadays that just means less work for me. Last time I was doing a 4 hour charting shift. FOUR HOURS.

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post #24 of 5012 (permalink) Old 01-23-2017, 01:16 AM
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Quote:
Originally Posted by Darkwizzie View Post

Something funny happened to me today. Running 7600k on z170 Asus Hero.

At 100.9 bclk x 52 core mult everything looked normal.
At 101.0 bclk x 52 core temps go up 40C. The same applies to 100 x 53, so it's not the bclk. 


I've never seen anything like this before. In the picture below it was 100.8 bclk on the left, forgot to take picture of 100.9.
Warning: Spoiler! (Click to show)


Sort of a bug with Asus boards. When moving past 5.25GHz auto values for PLL Termination, PCH Core, and CPU Standby voltages are set to 1.6V which is way too high. Set all of these manually to 1V.
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post #25 of 5012 (permalink) Old 01-23-2017, 01:56 AM - Thread Starter
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Quote:
Originally Posted by Silicon Lottery View Post


Sort of a bug with Asus boards. When moving past 5.25GHz auto values for PLL Termination, PCH Core, and CPU Standby voltages are set to 1.6V which is way too high. Set all of these manually to 1V.

I guess thankfully, my chip can't pass 5.25ghz at <1.42v so it's not really a problem I run into.

Is Raja aware of this issue? I mean... that is a HUGE error.


Oh, and which boards are affected, if you know?

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post #26 of 5012 (permalink) Old 01-23-2017, 02:00 AM
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post #27 of 5012 (permalink) Old 01-23-2017, 06:09 AM
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Quote:
Originally Posted by Silicon Lottery View Post

Sort of a bug with Asus boards. When moving past 5.25GHz auto values for PLL Termination, PCH Core, and CPU Standby voltages are set to 1.6V which is way too high. Set all of these manually to 1V.

Thanks for sharing as this was occurring on my board as well.

Quote:
Originally Posted by Darkwizzie View Post

Oh, and which boards are affected, if you know?

Per his website, SL uses a Asus Maximus VIII Hero for RealBench testing with 1151.

I use an Asus ROG Maximus IX Formula and it exhibits the same behavior.
Quote:
Originally Posted by Darkwizzie View Post

The variation has nothing to do with the differences between the chips. I just decided to increase the requirements. (Of course, raising it on everyone over a year after Skylake came out would cause problems.) I haven't considered the effect that will have on comparing the average clocks of both chips. That is a thing, but at the same time my main problem is whether the requirements are stringent enough. I'm still thinking about it. Probably Prime and OCCT can drop back down, and x264/realbench can stay 8hr?

Glad to hear that you're still mulling this over. Since you're still open to suggestions, I say leave them as they were for Skylake. Let the end users determine their own requirements for day-to-day stability, but maintain the same standard for submission.

There will always be some who feel the standard is too hard with others feeling it's too easy. Either is irrelevant as you're collecting the data for its comparative value.

Thanks for your time and for the work you've put into these threads.

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post #28 of 5012 (permalink) Old 01-23-2017, 06:37 AM
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Odd - I didn't notice this bios issue on my Impact. thinking.gif

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post #29 of 5012 (permalink) Old 01-23-2017, 06:41 AM
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Odd - I didn't notice this bios issue on my Impact. thinking.gif

It only happens on my Formula with adaptive voltage set. Or at least that's the only time I've noticed it.

Disregard my last. It's happening in manual and adaptive. I just wasn't looking.

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post #30 of 5012 (permalink) Old 01-23-2017, 06:42 AM
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Quote:
Originally Posted by done12many2 View Post

It only happens on my Formula with adaptive voltage set. Or at least that's the only time I've noticed it.
yeah, I gotta look into this a bit more... see if he M8I does the same. I was using adaptive, but hadn't noticed a 1.6 standby by voltage, which is waaay too high.

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