6700k True Overclocking Issues

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DarkOutlaw

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Jun 24, 2012
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I haven't overclocked since the 2500k chip was in its prime (my machine clocked at 4.6 Ghz is still running 24/7 just fine for over 5 years now). I recently decided to build a 2nd machine with the 6700k chip, specifications:

EVGA DG 8 case (6 Fans + 2 Rad Fans)
Intel 6700k
Asus Maximus VIII Hero
Corsair H105 (Pull config, soon to be push/pull)
GSkill Ripjaws V Series 2 x 16GB
EVGA SuperNova 750
Arctic Silver
Mushkin 480GB SSD
WD Blue 4 TB x 2 (Raid 1)
EVGA GTX 1060 SC 6 GB

The first issue I have I noticed immediately. I cannot find a way for a true overclock. Maybe I am too old fashion for this, but back in the day we considered overclocking the turbo functionality a 'wimpy' way to OC a processor. My 2500k has turbo disabled, and the actual base speed of the chip is tuned up. Is this possible with the 6700k to disable turbo, and overclock this chip correctly? I have a feeling this is just because of the Asus board, but I could be wrong.

The second issue I have is with my temps. I have found out that part of this issue is that P95 has changed and the latest version causes wildly high temps. My issue would be is P95/IBT still the gold standard? I have tried the new ASUS real bench, but do not know how reliable it is when searching for a stable overclock. All three of these give me a range of different temps.

I was here when we created the Intel Overclocking Club, and Ryan was cooling his 2500k with a coleman cooler and frozen jugs of water. Maybe I am a bit too old school for this new stuff...

 
Solution
geofelt
I think the term "overclocking" for skylake is a misnomer.
It used to be that you increased the voltage to get an increase in speed. Today, you increase the multiplier, and the motherboard adjusts the voltage(VCORE) to support the request.
How well you can oc your i7-6700K is largely determined by your luck in getting a good chip.
As of 5/2016
What percent can get an overclock at a somewhat sane 1.40v Vcore.

I7-6700K
4.9 2%
4.8 17%
4.7 59%
4.6 93%
4.5 100%

You will find that your upper limit is determined by the vcore you can tolerate, not the temperature.

I like to stress test with OCCT which uses a more normal set of instructions. Prime 95 and IBT are not typical.
It will shut off the test at 85c.

With skylake, it can be...
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geofelt

geofelt

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Oct 9, 2006
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I think the term "overclocking" for skylake is a misnomer.
It used to be that you increased the voltage to get an increase in speed. Today, you increase the multiplier, and the motherboard adjusts the voltage(VCORE) to support the request.
How well you can oc your i7-6700K is largely determined by your luck in getting a good chip.
As of 5/2016
What percent can get an overclock at a somewhat sane 1.40v Vcore.

I7-6700K
4.9 2%
4.8 17%
4.7 59%
4.6 93%
4.5 100%

You will find that your upper limit is determined by the vcore you can tolerate, not the temperature.

I like to stress test with OCCT which uses a more normal set of instructions. Prime 95 and IBT are not typical.
It will shut off the test at 85c.

With skylake, it can be as simple as just increasing the max multiplier. Leave voltages on default.
When you reach your limit, implement speedstep which I think is called adaptive voltage on your motherboard.
That will reduce the multiplier and voltage when the cpu has little to do.
You can monitor with cpu-Z.

On the ram, keep it to stock 1.2v. Likely that will be 2400 speed.
I found that higher speeds required higher ram voltage and that seems to take away from my max oc.
Ram speed should matter little, here is a ram speed scaling report:
http://www.silentpcreview.com/article1478-page1.html
 
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Solution
LilDog1291

LilDog1291

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Jan 9, 2013
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Turbo was wimpy in the past but with XMP profiles today manufacturers are doing a pretty good job of getting the most out of the CPU that normal consumers could hope for without building a custom cooling solution.

As far as P95 goes though. There have been some changes with the way P95 tests and if you are using too new of a version on your 6700k it generates more heat than older versions. Look at this post for more info: http://www.tomshardware.com/answers/id-2699004/cpu-hot.html

You could try tweaking all of the voltages yourself to push farther than the built in motherboard overclock profiles or even the XMP profiles but I don't know how much you would stand to gain versus the quirks that come with it. Have fun overclocking buddy!
 
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