i7 6700k High Voltage Issue

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pcbuilduk

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Apr 2, 2016
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Hi everyone


I have recently discovered that my i7 6700k is running on a very high voltage. I have not changed any values in bios or did any manual configuration. What I did however is I enabled the XMP profile in BIOS on my asus z170 pro gaming in order to achieve the 2800 mhz speed on my ddr4 ram becuase without it the ram was only running at 2600 mhz. It appears to also slightly overclocked my CPU since each core is turbo boosting up to 4.3GHZ and the stock boost is only 4.2GHZ

Is this type of voltage ok and is not going to damage my cpu ? should i revert the XMP profile ? if so then how to boost the ram to run at its maximum speed ?

Screenshoot:

voltages.PNG


best regards
 
Solution
anbello262
No need to overclock your CPU or dial back your RAM to fix this.
As said above, just go into BIOS and manually set the VID (or Vcore, depending on the motherboard) to a fixed value. 1.2V for stock speeds is a ver good number that should be perfectly stable
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Eximo

Eximo

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May 27, 2010
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XMP shouldn't have anything to do with the CPU. So there is probably another poor man's overclocking setting for the CPU. These generally have voltages that are too high to ensure compatibility with all processors.

1.4 volts is supposed to be the upper limit for 24/7 use, but 1.45 is also listed as a safe maximum with decent cooling.
 
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geofelt

geofelt

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Oct 9, 2006
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This is confusing.
I think VID is different from VCORE.
As I understand it VID is what can be delivered to the cpu, VCORE is what is actually used.
I find that CPU-Z gives me what I think is the correct VCORE to be used in overclocking.
That should be limited to about 1.4v.

I see no problem with your setup.
That said, XMP for ram faster than 2400 speed will generally raise the ram voltage higher than the stock 1.2v.
I have found that higher ram voltages seem to take away from the overclocking ability of the multiplier a bit.
The actual app performance of faster ram is not that great.
Here is a report on slylake ram scaling:
http://www.silentpcreview.com/article1478-page1.html

The I7-6700K is a great processor at stock.
If you wish to oc, then pay attention to vcore as measured by cpu-z.
You will likely run out of vcore limits at 1.4v than you will run out of thermal limits which should be about 85c.

Your results will depend on how lucky you were in the binning lottery.
s 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%

Prime95 and IBT use instructions that are not commonly used.
Test with something like OCCT which use more normal instructions.

When done, implement adaptive voltage and speedstep.
That will reduce the multiplier and Vcore when the cpu has little to do.
 
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pcbuilduk

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Apr 2, 2016
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Hi everyone

thank you for all your answers.

I dd not wish to overclock my CPU. What I wanted to do is to boost my RAM speed from 2600MHZ to the advertised 2800MHZ. I noticed that the ram is just not workiing at its full potential and read somewhere online that to fix this problem i should enable the XMP.

However I don't want to damage my CPU for that extra 200MHZ of ram speed. I checked the voltages with CPU-Z and it jumps between 1.2 and 1.411 but mostly stays at the 1.3(something) limit.

Screenshoot

i7cpuzvoltage.PNG
 
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anbello262

anbello262

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Sep 27, 2013
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No need to overclock your CPU or dial back your RAM to fix this.
As said above, just go into BIOS and manually set the VID (or Vcore, depending on the motherboard) to a fixed value. 1.2V for stock speeds is a ver good number that should be perfectly stable
 
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Solution
D

dan42876

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Jan 11, 2017
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Ive seen this so much over the net and had the same problem myself with this Asus line of mother boards. when you enable a different xmp for ram speed it switches the cores setting to auto sync, so basicly your cpu it running at 4.2 across all cores. not just "turbo coring" at 4.2. Go in your bios and switch it back to AUTO. it will run at 1.2xx. 4.0 across all cores. And keep your cpu from pulling so much power and heat.

 
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