6700k Overclocking Confusion

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Berkin

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Jul 4, 2016
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I am posting this for half informing people and half asking a question.

I was overclocking my 6700k (I use a CM Hyper 212 EVO), and I just randomly started with 4.5GHz and 1.3V . Then booted up and checked my temps, it all seemed okay but then I realized in CPUID under the CPU there was a VID value which said 1.375V max. I got worried and thought maybe my MoBo is doing something weird and ignoring my limit. So I changed the voltage limit to 1.25V. When I booted up that value was still going as high as 1.379V.

And then I just scrolled up and saw that there was another voltage value under MoBo info and it was 1.248V.

After research, turns out that VID is overruled by manual limit I set in BIOS and means nothing when overclocking. So I hope this clears something for newbies like me.

My question is, why am I getting low-mid 70s max temps with 1.25V on 4.5GHz? Is 1.25V even enough for 4.5GHz? Is this too high temps simply because voltage is basicly stock or is this too low temps because the speed of the CPU is high?

One confusion I had is gone, now I am confused about this one.
 
Solution
Geekwad
This may help with some of your questions about what the values/settings are:

http://www.tweaktown.com/guides/7481/tweaktowns-ultimate-intel-skylake-overclocking-guide/index.html

Remember, overclocking is more about the process you employ to arrive at the final settings, not about just punching in some settings and seeing if it works. Keep in mind (especially if you're doing it just from the 'gamer' perspective) what the end result looks like too:

http://ocaholic.ch/modules/smartsection/item.php?page=3&itemid=3948

http://www.anandtech.com/show/9533/intel-i7-6700k-overclocking-4-8-ghz/8
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Geekwad

Geekwad

Admirable
Sep 25, 2015
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This may help with some of your questions about what the values/settings are:

http://www.tweaktown.com/guides/7481/tweaktowns-ultimate-intel-skylake-overclocking-guide/index.html

Remember, overclocking is more about the process you employ to arrive at the final settings, not about just punching in some settings and seeing if it works. Keep in mind (especially if you're doing it just from the 'gamer' perspective) what the end result looks like too:

http://ocaholic.ch/modules/smartsection/item.php?page=3&itemid=3948

http://www.anandtech.com/show/9533/intel-i7-6700k-overclocking-4-8-ghz/8
 
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Solution
Multipack

Multipack

Honorable
Sep 5, 2016
4,283
3
9,960
Put simply, the VID is the voltage the CPU requests to run at it's set frequency, the vCore is the voltaage it gets. I am surprised you havent been getting BSODs with that much disparity between your vCore and VID.

The VID is a good way to gauge actual voltage requirements, but if setting a fixed voltage you will have to allow for vDroop during high load by offsetting the LLC slightly in most cases.

I'd be surprised if you got a stable 4.5GHz OC at less than 1.3v but it has been known. Depends on your chip and other OC settings.

Low to mid 70s in centigrade is the absolute max temp you should run your CPU under for any sustained period of time. I'd set 70c as a safe ceiling. 64c is Intel's tCase. The throttling doesnt happen until higher than that I know, but in the interests of the lifespan of your chip I'd keep it down.
 
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Q

qcman17

Commendable
Jan 13, 2017
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1,510
I have the same CPU and cooler. I ran 4.5 with 1.27 V in the BIOS and it was doing great until I loaded up the new Doom and bam back to desktop. Synthetic stress tests were working well though. I was confused as in Manual I was seeing peaks up to say 1.37 or 1.38 under load and I had not used adaptive or offset. CPUID or is it CPU-Z ??? shows my actual volts and moves around with speeds it doesn't say a mximum value for me?
 
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Multipack

Multipack

Honorable
Sep 5, 2016
4,283
3
9,960


It sounds like you have got adaptive voltage turned on if it moves around. OCing is far from an exact science and depends on your motherboards features and settings as much as anything else. Launching Doom just put your CPU under too much pressure and it crashed basically.

LLC (load line calibration) offset is to keep the voltage steady, not like adaptive or auto voltage, which is something else. Am not sure what you are trying to solve but it may be a good idea to start a new thread not to confuse things.
 
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