OC-ed my i7 6700k, temp at 80C

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Khai Nguyen

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Dec 28, 2014
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I oc-ed my i7 6700k to 4.7ghz with VID 1.355v and 1.375v underload.

When I benchmark with AIDA64, the temp goes up to 85C. When playing games, the highest temp that I got was 77C. I am using the Hyper 212 evo.

65C at stock clock and volt setting.
are those good temp?
should I lower the clock speed at bit?
 
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geofelt

geofelt

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Oct 9, 2006
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I think you scored a better than average chip.
skylake oc statistics.
As of 2/16/16
What percent can get an overclock at a somewhat sane 1.40v Vcore.

I7-6700K
4.8 18%
4.7 56%
4.6 87%
4.5 100%

The key is keeping vcore no higher than 1.4v.
Your temperatures are fine under load.
The hyper212 is good, but not tops.
It will do the job.

If your temperatures at idle are 10-15c. over ambient, the cooler is mounted well.

Implement speedstep and adaptive voltae.
That will reduce the voltage and multiplier when the cpu is not under heavy load.

I would back off a notch; how good do you really need to be?

Any cooler needs fresh air to do it's job.
If you take the case covers off and it makes a big difference, pay some attention to case cooling.
 
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photonboy

photonboy

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Jun 20, 2006
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Intel recommends a slightly lower temperature probably. It's typically been in the low 70degC range for the last few generations.

Throttle might be around 100degC, but we're talking about LIFESPAN of your CPU.

*Considering the very minimal real-world difference I suggest just dropping to 4.5GHz, and adjust the voltage as low as possible to remain STABLE. The voltage in particular is what causes the temperature to rise.

**I've not played around with SKYLAKE, but on my i7-3770K there were options for how the CPU drops the frequency depending on how many CORES were used.

Try running Prime95 and see what FREQUENCY you settle out at in Task Manager.

*For example, on my i7-3770K it was set to:
1-core: x39 (3.9GHz)
2-core: x38
3-core: x37
4-core: x36

I didn't even change the voltage and ended up with x43 for 1 and 2 cores, and x42 for 3 and 4 cores so I never drop below 4.2GHz (reported as 4.16GHz I think in Task Manager).

(Speed step will drop below 4.2GHz for non-demanding tasks to save power. I would suggest NOT disabling that. I think Skylake changed the name)

In your case which I'm sure is a LITTLE DIFFERENT you may be able to do something similar but keep the temperature down quite a bit while keeping most of that performance (which again may not make a noticeable difference in the real world especially for gaming).

Update:
The Intel CPU diagnostic (Intel site) is useful I guess, but it always sets my CPU back to default settings WITHOUT TURBO. I have to reboot my system. That doesn't really validate my CPU. You may be different but I suggest looking at the Task Manager with the test running to be sure. Otherwise, maybe run Prime95 or similar.
 
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K

Khai Nguyen

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Dec 28, 2014
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I am unable to turn on speedstep, I don't know why my bios doesn't let me. I am using MSI z170A PC MATE.
Image
 
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