dyils,
As
vMax has pointed out, 1.43 edges into risky regions of Core voltage as well as the degradation curve for 14 nanometer processors.
Each microarchitecture has a “maximum recommended vcore”. The values below are based on the consensus among well informed, highly experienced and reputable system builders, reviewers and overclockers. Vcore is always a controversial topic, where some enthusiasts and overclockers claim these values are too conservative, while others claim they're too excessive.
However, with respect to the hard-earned personal property of others, the majority of users agree these values are well founded, centered and appropriate. Here's the values for each microarchitecture from 14 to 65 nanometers since 2006:
We know that over time, excessive voltage and heat damages electronics, so when using manual Vcore settings in BIOS,
excessive Core voltage and Core temperature can result in accelerated "Electromigration" - https://www.google.com/?gws_rd=ssl#q=Electromigration.
This causes the transistor junctions and circuit paths within the processor's layers of nano-components to undergo premature erosion and
degradation, which will eventually result in blue-screen crashes that become increasingly frequent over time. Although stability may be temporarily restored by further increasing Vcore, this only accelerates degradation. The alternative is to decrease overclock and Vcore, which can restore stability and slow the rate of degradation.
Each microarchitecture has a "degradation curve". As a rule, CPU's are more susceptible to electromigration and degradation with each "Die-shrink". However, the exception is Intel's 14 nanometer microarchitecture, where advances in FinFET transistor technology have improved voltage tolerance. For example, it’s important to point out that
22 nanometer 3rd and 4th generation processors will not tolerate the higher Core voltages of other microarchitectures.
Here's how the degradation curve on 22 nanometer 3rd and 4th generation differs from 14 nanometer 5th through 9th generation:
Degradation curves are relative to the term “Vt (Voltage threshold) Shift” which is expressed in millivolts (mv). Users can not monitor Vt Shift. This value basically represents the potential for
permanent loss of normal transistor performance over time, which adversely affects stability.
With respect to overclocking, excessively high Core voltage drives excessively high power consumption (watts) resulting in higher Core temperatures during heavy workloads, all of which contribute to Vt Shift. Core voltages that impose high Vt Shift values are
not recommended.
Remember to keep overclocking in perspective. For example, the difference between 4.5 GHz and 4.6 Ghz is less than 2.3%, 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.
CT