Yeah i couldnt manage to get it stabble it was bsoding i needed 1.37v for 4.9ghz so i went down to 1.33volts 4.8ghz but temps get high aswell which is weird cpu is delided. 80 celsius max at cod warzone but they hover around 65-75c.
Here's where I get my information.
Thank you man that was very helpful ill try to improve my temps but keep 4.8 at 1.33v. I was reading alot before attempting to OC and delid and based on iformation i gained people were saying voltages are not what degrade cpu but heat.Thanks, WildCard.
fr0sty98,
Each Microarchitecture has a “Maximum Recommended Vcore”. 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 the Maximum Recommended Vcore per 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 cause 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, and thus performance.
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. Decreasing overclock and Vcore may temporarily restore stability and slow the rate of degradation. Extreme overvolting can cause degradation in minutes, but a sensible overclock remains stable for years.
Each Microarchitecture also has a "Degradation Curve". As a rule, CPUs are more susceptible to electromigration and degradation with each Die-shrink. However, the exception to the rule is Intel's 14 nanometer Microarchitecture, where advances in FinFET transistor technology have improved voltage tolerance.
Here's how the Degradation Curves correspond to Maximum Recommended Vcore for 22 nanometer 3rd and 4th Generation, which differs from 14 nanometer 5th through 10th 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.
When tweaking your processor near its highest overclock, keep in mind that for an increase of 100 MHz, a corresponding increase in Core voltage of about 50 millivolts (0.050) is needed to maintain stability. If 65 millivolts (0.065) or more is needed for the next stable 100 MHz increase, it means you're attempting to overclock your processor beyond its capability.
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. But if you're really hell-bent to push it, then 1.325 is about as far as I'd go.
Here's the nominal operating range for Core temperature:
Core temperatures above 85°C are not recommended.
Core temperatures below 80°C are ideal.
Core temperatures increase and decrease with Ambient temperature.
Read this: Intel Temperature Guide - See Section 8, Overclocking and Voltage
CT
Hey man this is one of the best answers i have ever seen i guess im going back to 4.7ghz and 1.28volts . Thanks alot i guess there is alot of missinformation out there. I ussualy watch gamernexus and der8auer for all info on overclocking and deliding.Degradation has always been a controversial topic among overclockers on a quest to squeeze out another 100MHz. Opinions abound; especially when the "people were saying", are those who were not very well informed, and were simply regurgitating what other "people were saying".
Since Intel's launch of 14 nanometer processors in 2015, users have become accustomed to seeing Vcore numbers around 1.4 getting tossed around on forums like gorilla poo in a cage. Most who are new to overclocking and lack fundamental knowledge and experience simply jump to the conclusion that the older 22 nanometer microarchitecture tolerates the same Vcore. Not true.
As most users don't bother to research the topic, they're unaware that advances in FinFET transistor technology from 22 to 14nm encompass significant differences.
Not unlike malware, users will disregard degradation until it's experienced first-hand, when it gradually begins to cause intermittent instabilities, crashes, BSODs and software corruption, which can be very time consuming and difficult to troubleshoot and isolate.
Overclockers are typically unwilling to acknowledge or embrace the possibility that their CPU is beginning to show evidence of degradation, nor do they have much incentive to broadcast their excessive overvolting blunders.
Core voltage multiplied by direct current (amps) equals power (watts) which is driven by workload, that in turn drives Core temperature. Over time, these are the actual real variables that will cause transistor degradation due to Electromigration and Vt Shift.
Here's the degradation variables summarized in a list:
• Voltage
• Current
• Power
• Workload
• Temperature
• Time
The voltages and curves in the above graphs are not imaginary; degradation is a reality, and it does happen when too much Vcore is applied, even if Core temperatures are not excessively high. If you click on the red links provided above, you can read for yourself the undisputable hard scientific proof behind Electromigration and Vt Shift.
If you look very carefully at the Vt Shift graph and closely examine the blue curve for 22nm processors, you can see that 1.325 volts is about as high as you should go. However, a simple rule of thumb for 22 nanometer 3rd and 4th generation processors is, if you don't want to risk degradation, then don't exceed 1.3 volts or 80°C.
The maximum recommended Vcore limits and supporting documentation have been made available for you to read and consider. Regardless, if this isn't what you want to hear, then you might prefer to just ignore it, and instead trust your CPU's longevity to what "people were saying".
CT
When tweaking your processor near its highest overclock, keep in mind that for an increase of 100 MHz, a corresponding increase in Core voltage of about 50 millivolts (0.050) is needed to maintain stability. If 65 millivolts (0.065) or more is needed for the next stable 100 MHz increase, it means you're attempting to overclock your processor beyond its practical capability.
You needed 75 millivolts (0.075) which indicates your 4770K was above its overclocking curve and wasn't actually capable of sustaining a 24/7 overclock at 4.8GHz. Also, if you read my 1st and 2nd posts, you saw why 1.35 Vcore is too high for 22 nanometer processors, not to mention that even at 1.3 Vcore and delidded with good cooling, Core temperatures become challenging to cool under 80°C in many instances. Of course, Direct-Die cooling yields the best results.
But at what ambient temperature?
Running exactly which "stress test"?
It levels the playing field when these critical variables are stated up-front.
A steady-state true 100% workload is Prime95 v29.8, Small FFTs, all AVX disabled, which is ideal for testing thermal performance. OCCT v6.0.0, Small data set, No AVX is also a steady-state workload at about 97%, and is nearly identical to Prime95.
Although CineBench R20 is about a 100% workload, it's a fluctuating workload, which is not the best test method to check cooling performance. CineBench R15 is a lighter workload at at about 95% which, even when running a script for looping the test, it fluctuates much more frequently than CineBench R20.
CT
Yes, Ring frequency and voltage, as well as System Agent Voltage all affect Core temperatures, which are also affected by memory frequency and voltage.
Prime95 is actually quite easy to use. Here's a link to download it:
• ... Prime95 v29.8
“Stress” tests vary widely and can be characterized into two categories; stability tests which are fluctuating workloads, and thermal tests which are steady workloads. Prime95 v29.8 Small FFTs (AVX disabled) is ideally suited for testing thermal performance, because it conforms to Intel's Datasheets as a steady 100% workload with steady Core temperatures. No other non-proprietary utility can so closely replicate Intel's thermal test workload.
Note: Click on the AVX test selections that are not greyed out so that all three AVX boxes are checked, as shown above.
Utilities that don't overload or underload your processor will give you a valid thermal baseline. Here’s a comparison of utilities grouped as thermal and stability tests according to % of TDP, averaged across six processor Generations at stock settings rounded to the nearest 5%:
Although these tests range from 70% to 130% TDP workload, Windows Task Manager interprets every test as 100% CPU Utilization, which is processor resource activity, not actual workload. Core temperatures respond directly to Power consumption (Watts), which is driven by workload. Prime95 v29.8 Small FFTs (AVX disabled) provides a steady 100% workload, even when TDP is exceeded by overclocking. If Core temperatures don't exceed 80°C, your CPU should run the most demanding real-world workloads without overheating.
It's all covered in the Intel Temperature Guide; just click on the link in my signature.
CT
Yes, Ring frequency and voltage, as well as System Agent Voltage all affect Core temperatures, which are also affected by memory frequency and voltage.
Prime95 is actually quite easy to use. Here's a link to download it:
• ... Prime95 v29.8
“Stress” tests vary widely and can be characterized into two categories; stability tests which are fluctuating workloads, and thermal tests which are steady workloads. Prime95 v29.8 Small FFTs (AVX disabled) is ideally suited for testing thermal performance, because it conforms to Intel's Datasheets as a steady 100% workload with steady Core temperatures. No other non-proprietary utility can so closely replicate Intel's thermal test workload.
Note: Click on the AVX test selections that are not greyed out so that all three AVX boxes are checked, as shown above.
Utilities that don't overload or underload your processor will give you a valid thermal baseline. Here’s a comparison of utilities grouped as thermal and stability tests according to % of TDP, averaged across six processor Generations at stock settings rounded to the nearest 5%:
Although these tests range from 70% to 130% TDP workload, Windows Task Manager interprets every test as 100% CPU Utilization, which is processor resource activity, not actual workload. Core temperatures respond directly to Power consumption (Watts), which is driven by workload. Prime95 v29.8 Small FFTs (AVX disabled) provides a steady 100% workload, even when TDP is exceeded by overclocking. If Core temperatures don't exceed 80°C, your CPU should run the most demanding real-world workloads without overheating.
It's all covered in the Intel Temperature Guide; just click on the link in my signature.
CT
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