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6700k Overclocking Confusion

6700k Overclocking Confusion

W
Winner
Member
242
04-18-2016, 11:30 AM
#1
I am sharing this to give a brief update and also ask a few questions.
I was adjusting my 6700k with a CM Hyper 212 EVO, starting at 4.5GHz and 1.3V, and everything looked fine until I noticed a VID value in the CPU info that indicated a maximum of 1.375V. I became concerned that my motherboard might be ignoring the limit. I adjusted the voltage setting to 1.25V, but the temperature stayed high at around 1.379V. Later, I found another setting under the motherboard details showing 1.248V.
After some research, I learned that the VID is often overridden by a manual limit set in BIOS and doesn’t really matter during overclocking. I hope this helps newcomers.
My main question is: why am I seeing low to mid-70s temperatures at 1.25V with 4.5GHz? Is 1.25V sufficient for that speed, or are the temperatures just too high because the voltage is basic stock? Or is it because the CPU is running very fast?
I also had some confusion about this and now I’m not sure what to expect.
W
Winner
04-18-2016, 11:30 AM #1

I am sharing this to give a brief update and also ask a few questions.
I was adjusting my 6700k with a CM Hyper 212 EVO, starting at 4.5GHz and 1.3V, and everything looked fine until I noticed a VID value in the CPU info that indicated a maximum of 1.375V. I became concerned that my motherboard might be ignoring the limit. I adjusted the voltage setting to 1.25V, but the temperature stayed high at around 1.379V. Later, I found another setting under the motherboard details showing 1.248V.
After some research, I learned that the VID is often overridden by a manual limit set in BIOS and doesn’t really matter during overclocking. I hope this helps newcomers.
My main question is: why am I seeing low to mid-70s temperatures at 1.25V with 4.5GHz? Is 1.25V sufficient for that speed, or are the temperatures just too high because the voltage is basic stock? Or is it because the CPU is running very fast?
I also had some confusion about this and now I’m not sure what to expect.

T
TheOnlyBeqr
Junior Member
34
04-19-2016, 09:03 AM
#2
This information can assist with understanding the values and settings you're interested in.
For more details, refer to the guides provided:
http://www.tweaktown.com/guides/7481/twe...index.html
Remember, overclocking focuses on the method used to reach the desired settings, not just entering random values.
From a gamer's viewpoint, consider the final performance outcome.
Additional resources are available at:
http://ocaholic.ch/modules/smartsection/...temid=3948
http://www.anandtech.com/show/9533/intel...-4-8-ghz/8
T
TheOnlyBeqr
04-19-2016, 09:03 AM #2

This information can assist with understanding the values and settings you're interested in.
For more details, refer to the guides provided:
http://www.tweaktown.com/guides/7481/twe...index.html
Remember, overclocking focuses on the method used to reach the desired settings, not just entering random values.
From a gamer's viewpoint, consider the final performance outcome.
Additional resources are available at:
http://ocaholic.ch/modules/smartsection/...temid=3948
http://www.anandtech.com/show/9533/intel...-4-8-ghz/8

E
ElementMonkey
Junior Member
12
04-19-2016, 10:50 AM
#3
This information can assist with understanding the values and settings you're interested in.
For more details, refer to the guides provided:
http://www.tweaktown.com/guides/7481/twe...index.html
Remember, overclocking focuses on the method used to reach the desired settings, not just entering random values.
Consider your goals from a gaming standpoint:
http://ocaholic.ch/modules/smartsection/...temid=3948
http://www.anandtech.com/show/9533/intel...-4-8-ghz/8
E
ElementMonkey
04-19-2016, 10:50 AM #3

This information can assist with understanding the values and settings you're interested in.
For more details, refer to the guides provided:
http://www.tweaktown.com/guides/7481/twe...index.html
Remember, overclocking focuses on the method used to reach the desired settings, not just entering random values.
Consider your goals from a gaming standpoint:
http://ocaholic.ch/modules/smartsection/...temid=3948
http://www.anandtech.com/show/9533/intel...-4-8-ghz/8

S
StyleTrick
Senior Member
744
04-21-2016, 06:50 AM
#4
The VID is the voltage the CPU asks for at its set frequency, and the vCore is the actual voltage it receives. I was surprised you haven’t been getting BSODs with such a big difference between your vCore and VID. The VID gives a clear picture of voltage needs, but if you fix a voltage, you’ll need to account for voltage drop during heavy use by adjusting the LLC slightly. It’s unlikely you’d get a stable 4.5GHz OC at less than 1.3v, though that has happened before—depends on your chip and other settings. Running your CPU in the low to mid 70s Celsius is the highest safe temperature for any long time. I’d aim for around 70°C as a safe limit. 64°C is Intel’s tCase setting. Throttling usually starts above that, but keeping it lower helps extend the chip’s life.
S
StyleTrick
04-21-2016, 06:50 AM #4

The VID is the voltage the CPU asks for at its set frequency, and the vCore is the actual voltage it receives. I was surprised you haven’t been getting BSODs with such a big difference between your vCore and VID. The VID gives a clear picture of voltage needs, but if you fix a voltage, you’ll need to account for voltage drop during heavy use by adjusting the LLC slightly. It’s unlikely you’d get a stable 4.5GHz OC at less than 1.3v, though that has happened before—depends on your chip and other settings. Running your CPU in the low to mid 70s Celsius is the highest safe temperature for any long time. I’d aim for around 70°C as a safe limit. 64°C is Intel’s tCase setting. Throttling usually starts above that, but keeping it lower helps extend the chip’s life.

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Colefusion
Senior Member
382
04-21-2016, 03:20 PM
#5
I have identical CPU and cooler. I ran 4.5 with 1.27 V in BIOS, and everything was performing well until I started playing the new Doom. Synthetic stress tests were functioning properly. I was puzzled because in Manual mode I observed peaks reaching around 1.37 or 1.38 under load, but I hadn't applied adaptive or offset settings. CPU-Z or CPUID shows my actual voltage and fluctuates with speeds, not indicating a maximum value for me?
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Colefusion
04-21-2016, 03:20 PM #5

I have identical CPU and cooler. I ran 4.5 with 1.27 V in BIOS, and everything was performing well until I started playing the new Doom. Synthetic stress tests were functioning properly. I was puzzled because in Manual mode I observed peaks reaching around 1.37 or 1.38 under load, but I hadn't applied adaptive or offset settings. CPU-Z or CPUID shows my actual voltage and fluctuates with speeds, not indicating a maximum value for me?

C
CaribouObscur
Junior Member
15
04-23-2016, 12:57 PM
#6
I have identical CPU and cooler. I ran 4.5 with 1.27 V in BIOS and everything was fine until I started playing the new Doom, then it crashed back to desktop. Stress tests were functioning properly. In Manual mode I observed peaks reaching around 1.37 or 1.38 under load without adaptive or offset settings. CPUID or CPU-Z indicates my actual voltage readings and shows fluctuations without specifying a maximum speed. It seems you might have enabled adaptive voltage if it changed, and overclocking is not precise—it depends on your motherboard features and settings. Launching Doom put your CPU under excessive stress and caused the crash. LLC offset maintains steady voltage, unlike adaptive or auto voltage, which are different concepts. You might want to create a new thread to clarify your issue without confusion.
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CaribouObscur
04-23-2016, 12:57 PM #6

I have identical CPU and cooler. I ran 4.5 with 1.27 V in BIOS and everything was fine until I started playing the new Doom, then it crashed back to desktop. Stress tests were functioning properly. In Manual mode I observed peaks reaching around 1.37 or 1.38 under load without adaptive or offset settings. CPUID or CPU-Z indicates my actual voltage readings and shows fluctuations without specifying a maximum speed. It seems you might have enabled adaptive voltage if it changed, and overclocking is not precise—it depends on your motherboard features and settings. Launching Doom put your CPU under excessive stress and caused the crash. LLC offset maintains steady voltage, unlike adaptive or auto voltage, which are different concepts. You might want to create a new thread to clarify your issue without confusion.