... kraken x62 ... 9600k ... should I go above 1.4 to get 5ghz?
ghezziryan,
My esteemed colleague,
Darkbreeze, is correct, as is
mdd1963. Further, you've made no mention of Core temperatures or ambient temperature, both of which can contribute to instabilities, as well as excessive Core voltage.
Overclocking is always limited by two factors; voltage and temperature. Although "Throttle" temperature for your 9600K is 100°C, you should never allow your CPU to approach its Core temperature "limit". The consensus among well informed and highly experienced reviewers, system builders expert overclockers and
Intel Engineers is that it's prudent to observe a reasonable thermal margin below Throttle temperature for ultimate stability, performance and longevity.
Here's the nominal operating range for Core temperature:
Core temperatures above 85°C are not recommended.
Core temperatures below 80°C are ideal.
We know that over time, excessive voltage and heat causes accelerated "
Electromigration". Processors have multiple layers of hundreds of millions of microscopic
nanometer scale components. Electromigration erodes fragile circuit pathways and transistor junctions which results in the
degradation of overclock stability.
Here's the Maximum Recommended Vcore per Microarchitecture from 14 to 65 nanometers since 2006:
Although your initial overclock may be stable, degradation doesn't appear until later, when increasingly frequent blue-screen crashes indicate a progressive loss of stability. The more excessive the levels of voltage and heat and the longer they're sustained determines how long until transistor degradation destabilizes your overclock.
Extreme overvolting can cause degradation in minutes, but a sensible overclock remains stable for years.
Each Microarchitecture also has a "
Degradation Curve".
Here's how the Degradation Curves correspond to Maximum Recommended Vcore for 14 nanometer 5th through 10th Generation, which differs from 22 nanometer 3rd and 4th Generation:
Degradation Curves are relative to the term “
Vt (Voltage threshold) Shift” which is expressed in millivolts (mv). Users can not monitor Vt Shift. With respect to overclocking and overvolting, Vt Shift basically represents the potential for
permanent loss of normal transistor performance. Excessively high Core voltage drives excessively high Power consumption and Core temperatures, all of which contribute to gradual Vt Shift over time. Core voltages that impose high Vt Shift values are
not recommended.
Here’s an example of a CPU Voltage / Frequency Curve:
To achieve the highest overclock, keep in mind that for your final 100 MHz increase, a corresponding increase in Core voltage of about 50 millivolts (0.050) is needed to maintain stability. If 70 millivolts (0.070) or more is needed for the next stable 100 MHz increase, it means you're attempting to overclock your processor beyond its capability.
With high-end cooling you might reach your Maximum Recommended Vcore limit before you reach the ideal Core temperature limit at
80°C. With low-end cooling you’ll reach
80°C before your Vcore limit. Regardless, whichever overclocking limit you reach first is where you should stop.
Overclocking is not an instant gratification endeavor; there's a learning curve involved, which when carefully followed, will yield successful results.
Read:
CPU overclocking guide and tutorial for beginners
Read:
Intel CPU Temperature Guide 2020
Remember to keep overclocking in perspective. For example, the difference between 5.0 and 4.9 GHz is only about 2%, which has no noticeable impact on overall system performance. It simply isn’t worth pushing your processor beyond recommended Core voltage and Core temperature limits just to squeeze out another 100 MHz.
You have some homework to do.
CT
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