How To Intel CPU Temperature Guide 2021

[CompuTronix]

Update: Jan 3, 2021

Intel CPU Temperature Guide 2021
by CompuTronix


Preface​

The topic of processor temperatures can be very confusing. Conflicting opinions based on misconceptions concerning terminology, specifications and testing leaves users uncertain of how to properly check cooling performance. This Guide provides an understanding of standards, specifications, thermal relationships and test methods so temperatures can be properly tested and compared. It is frequently updated and supports X-Series, Extreme, Core i, Core 2, Pentium and Celeron Desktop processors running Windows Operating Systems.

Contents

Part 1: How It Works

Section 1 ......................................... Introduction
Section 2 ...................... Ambient Temperature
Section 3 .............................. CPU Temperature
Section 4 ............................. Core Temperature
Section 5 ...................... Package Temperature
Section 6 ...................... Throttle Temperature

Part 2: Sorting It Out

Section 7 ... Specifications and Temperature
Section 8 ............... Overclocking and Voltage
Section 9 ................................ The TIM Problem

Part 3: Tests and Methods

Section 10 ........................... Thermal Test Tools
Section 11 ......................... Thermal Test Basics
Section 12 ..... Thermal Test 100% Workload
Section 13 .......... Thermal Test Minimum Idle

Part 4: Tips and Insights

Section 14 ............... Improving Temperatures
Section 15 .............. Summary and Conclusion
Section 16 .......................................... References


Part 1: How It Works


Section 1 - Introduction​

Intel Desktop processors have temperatures for each "Core" and a temperature for the entire "CPU". Core temperatures are measured at the heat sources near the transistor "Junctions" deep inside each Core where temperatures are highest. CPU temperature is instead a single measurement centered on the external surface of the CPUs "Case" or "IHS" (Integrated Heat Spreader) where the cooler is seated.

Core temperature is considerably higher than CPU temperature due to differences in the proximity of sensors to heat sources.

Figure 1-1​

Intel Desktop processors also have two Thermal Specifications. For Core temperature it's "Tjunction" which is also called "Tj Max" (Temperature Junction Maximum) or “Throttle” temperature. For CPU temperature it's "Tcase" (Temperature Case) which is IHS temperature.

Both Thermal Specifications are shown on Intel’s "Datasheets", which are detailed technical documents. However, Intel's "Product Specifications" website is a quick reference that only shows Tjunction for 7th Generation and later processors, or Tcase for 6th Generation and earlier.

Tcase has always been a confusing specification. Here's why:
​

When users of 6th Generation and earlier processors see their Thermal Specification on Intel’s Product Specifications website, most don’t realize what Tcase actually means. As there are numerous software utilities for monitoring Core temperature, users assume Tcase must be maximum Core temperature. This is a basic misconception which has persisted since 2006.

Tcase is not Core temperature.

Tcase is IHS temperature. It's a factory only surface measurement that users can't monitor.
Tjunction is Core temperature. It's measured at the heat sources where temperatures are highest.​

Since users can monitor Core temperatures but not IHS temperature, Core temperature is the standard for thermal measurement. Accordingly, the limiting Thermal Specification is Tjunction; not Tcase. Unfortunately, Intel has no documentation that describes the relationships between specifications and temperatures in a practical sense, so further explanations are given throughout the Guide.

In order to get a clear perspective of processor temperatures, it's important to familiarize yourself with some of the commonly used terms:

• Tom's Hardware Glossary

Use CPU-Z to identify your processor's specifications:

• CPU-Z

Figure 1-2

You can then look it up at Intel's Product Specifications website:

• Intel Product Specifications

Figure 1-3

For more detailed information, links to Intel’s Datasheets are shown in Section 16 - References.

Note: When asking temperature questions, always provide the following information:

CPU
Cooler
Core speed
Core voltage at load
Load test software
Temperature software
Load & idle Core temperatures
Memory
Motherboard
Graphics Card
Ambient temperature


Section 2 - Ambient Temperature​

Also called "room" temperature, this is the temperature measured at your computer's air intake. Standard Ambient temperature is 22°C or 72°F, which is normal room temperature. Ambient temperature is a point of reference for Intel’s Thermal Specifications. Knowing your Ambient temperature is important because all computer temperatures increase and decrease with Ambient temperature. Use a trusted analog, digital or infrared (IR) thermometer to measure Ambient temperature.

Here's the temperature conversions and a short scale:

Figure 2-1​

When you power up your rig from a cold start, all components are at Ambient, so temperatures can only increase. With conventional air or liquid cooling, no operating temperatures can be less than or equal to Ambient.

As Ambient temperature increases, thermal headroom and overclocking potential decreases.


Section 3 - CPU Temperature​

Also called "Tcase" (Temperature Case), this is a factory only temperature measured on the external surface of the IHS (Integrated Heat Spreader) using engineering samples. For lab testing only, a groove is cut into the surface of the IHS where a "thermocouple" sensor is embedded at the center. The processor is installed, the stock cooler is seated, the thermocouple is connected to monitoring devices, and the temperature is then tested under carefully controlled conditions.

Figure 3-1
​

Retail processors do not have a thermocouple sensor, so one of two different methods are used to display “CPU” temperature in BIOS and in monitoring utilities.

​

Previous Method: Core 2 Socket 775 and Core i 1st Generation Socket 1366 processors have a single Analog Thermal Diode below the Cores to "substitute" for a thermocouple sensor. The Analog value is converted to Digital (A to D) by the motherboard's Super I/O (Input / Output) chip, then is calibrated to look-up tables coded into BIOS. The monitoring utility provided by the motherboard manufacturer on your Driver CD displays “CPU” temperature in Windows. ”CPU” temperature is typically inaccurate and can vary greatly with BIOS updates.

Present Method: Core i Sockets 115x, 1200 and Extreme / X-Series Socket 20xx processors do not have an Analog Thermal Diode, but instead "substitute" the "hottest Core" for "CPU" temperature, which is a contradiction in terms that can be confusing. Nonetheless, this is the temperature shown in BIOS, and on some recent motherboards is shown on the two digit "debug" display. The monitoring utility provided by the motherboard manufacturer on your Driver DVD displays “CPU” temperature in Windows, but is actually the "hottest Core".

Regardless of the Method used, CPU temperature in BIOS is higher than in Windows at minimum idle, because BIOS boots the processor without power saving features and at higher Core voltages to ensure that it will initialize under any conditions.

Note: The term “CPU” temperature is commonly misused as a general term for any processor temperatures. Unfortunately, this blurs the distinctions between CPU temperature and Core temperature. Surprisingly, there are numerous instances where Intel contradicts their own terms. For example, Intel Extreme Tuning Utility software (IETU) and the Product Specifications website both have inconsistencies with the Datasheets, which use proper terminology.

Section 4 - Core Temperature​

Also called "Tjunction" (Temperature Junction), this is the temperature measured at the heat sources near the transistor “Junctions” inside each Core by individual Digital Thermal Sensors (DTS).

Figure 4-1​

Since the Digital Thermal Sensors (DTS) are located deep within the Cores where temperatures are highest, and Tcase is a factory measurement on the Integrated Heat Spreader (IHS) where temperatures are lower, there's a temperature difference between DTS and IHS locations. At 100% workload, the difference can range from 5 to 25°C which varies according to processor Generation. The significance of these differences is explained in Section 9 - The TIM Problem.

Core temperature is the standard for processor thermal measurement.
​

Intel's specification for DTS accuracy is +/- 5°C. Although sensors are factory calibrated, deviations between the highest and lowest Cores can be up to 10°C. Sensors tend to be more accurate at high temperatures, but due to calibration issues such as linearity, slope and range, idle temperatures may be less accurate.

Core temperatures respond instantly to changes in load.​

Intel’s specification for DTS response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup. Any software activity will show some percentage of CPU Utilization in Windows Task Manager, where unnecessary Tray items, Startups, Processes and Services that contribute to excessive spiking can be disabled. For details see Section 13, Note 1.

Here's the nominal operating range for Core temperature:

Core temperatures above 85°C are not recommended.

Core temperatures below 80°C are ideal.

Figure 4-2

Core temperatures increase and decrease with Ambient temperature.

Idle temperatures below 25°C are generally due to Ambient temperatures below 22°C.
​

Highest Core temperatures occur during stress tests or heavy rendering and transcoding, but are lower during less processor intensive apps. Gaming generally averages around 55 to 60°C, yet can range from 40 to 75°C, depending on how different games allocate CPU / GPU workloads, as well as differences in overall cooling performance and Ambient temperature.

For monitoring Core Temperature, a simple and accurate utility that's frequently updated is Core Temp.

Here’s a list of variables that affect Core temperature:

Ambient temperature
CPU Cooler
Fan speed
Pump speed
Thermal Interface Material
IHS / Cooler flatness
Core count
Core speed
Core voltage
BIOS updates
Turbo Boost
Hyper-Threading
Instruction Sets
Thermal Design Power
Memory
Case design
Cable management
Computer location
Ventilation
GPU cooler type
SLI / CrossFire
Dust

For more information see Section 14 - Improving Temperatures.


Section 5 - Package Temperature​

Package temperature is typically the hottest Core. In some utilities, "Package" temperature is synonymous with "CPU" temperature, where both correspond to the same sensor and display the same temperature.

Package temperature may intermittently deviate +/- a few degrees from the hottest Core due to a slight difference in sample timing.

Package temperature is shown in more detailed utilities such as Hardware Info. Package temperature can be influenced by Intel's on-Die IGPU (Integrated Graphics Processor Unit).

Section 6 - Throttle Temperature​

Also called "Tj Max" (Temperature Junction Maximum), this is the Thermal Specification that defines the Core temperature limit at which the processor will Throttle (reduce Core speed and voltage) to safeguard against thermal damage. Processors that reach Throttle temperature can cause momentary hesitations in applications and frame stuttering in games.

Throttle temperatures are shown below for several "Flagship" processors and their popular mainstream variants, including "TDP" (Thermal Design Power), which is expressed in Watts (W).

Core i

10th Generation 14 nanometer i9-10900K / i7-10700K (TDP 125W)
9th Generation 14 nanometer i9-9900K / i7-9700K (TDP 95W)
8th Generation 14 nanometer i7-8700K / i5-8600K (TDP 95W)
7th Generation 14 nanometer i7-7700K / i5-7600K (TDP 91W)
6th Generation 14 nanometer i7-6700K / i5-6600K (TDP 91W)
Tj Max (Throttle temperature) 100°C

5th Generation 14 nanometer i7-5775C / i5-5675C (TDP 65W)
Tj Max (Throttle temperature) 96°C

4th Generation 22 nanometer i7-4790K / i5-4690K (TDP 88W)
4th Generation 22 nanometer i7-4770K / i5-4670K (TDP 84W)
Tj Max (Throttle temperature) 100°C

3rd Generation 22 nanometer i7-3770K / i5-3570K (TDP 77W)
Tj Max (Throttle temperature) 105°C

2nd Generation 32 nanometer i7-2700K / i5-2550K (TDP 95W)
Tj Max (Throttle temperature) 98°C

1st Generation 45 nanometer i7-880 / i5-760 (TDP 95W)
1st Generation 45 nanometer i7-960 D0 (TDP 130W)
Tj Max (Throttle temperature) 100°C

Core 2

Core 2 45 nanometer Q9650 E0 / Q9550 E0 (TDP 95W)
Core 2 65 nanometer Q6700 G0 / Q6600 G0 (TDP 95W)
Tj Max (Throttle temperature) 100°C​

Note: In 2006, early Core 2 processors used DTS sensors for Throttle protection only; not for Core temperatures. Instead, CPU temperature (less accurate) was monitored using the Analog Thermal Diode. Utility developers soon discovered how to read Tj Max and monitor Core temperatures. Intel later disclosed Tj Max values in the Datasheets, and discontinued the Analog Thermal Diode after 45 nanometer processors. For 7th Generation and later, Intel changed the Product Specifications website in 2016 from Tcase to Tjunction (Tj Max).

Part 2: Sorting It Out


Section 7 - Specifications and Temperature
​

The previous Sections explained Intel’s specifications concerning how temperatures are measured. This Section focuses on how Thermal Design Power (TDP) relates to Thermal Specifications, and why Tcase and Tj Max "face values" are inconsistent with sensible real-world Core temperatures.

Note: With respect to terminology, Intel’s Product Specifications website incorrectly shows either “Tcase” or “Tjunction” as specifications. In that context, both are technically improper terms. The Datasheets, which use proper terminology, instead show “Tcase Max” and “Tj Max”. For the record, “Tcase Max” is a specification, while “Tcase” is IHS temperature. Correspondingly, “Tj Max” is a specification, while “Tjunction” is Core temperature.

• TDP specifications are expressed in Watts, which is Power that's dissipated as heat. The key word in “Thermal Design Power” is Design. Processors of the same Design are simultaneously fabricated on the same silicon wafer, but some have flaws. The best are “binned" as “Flagship” unlocked processors with all features enabled. Those with more flaws either have Cores, Cache, Hyper-Threading, Integrated Graphics or certain Instruction Sets disabled, and may be locked or binned at slower Core speeds.

For example, although processors of the same Design, Generation and Core count may share the same Thermal Design Power, variants without Hyper-Threading and those which run at slower Core speeds consume less Power and may not reach or exceed TDP unless overclocked. Higher Core temperatures are most prevalent among unlocked processors with higher TDP, higher Core speeds, Hyper-Threading and 4 Cores or more, which all require higher TDP aftermarket cooling, especially when overclocked.

• Tcase specifications are factory only IHS temperature measurements that users can't monitor. Tcase is not a thermal limit, but is instead a thermal value based on processor TDP and stock cooler TDP. Coolers and CPUs of different TDP values are often packaged together. Several Generations of Quad Core CPUs at 77, 84, 88 and 95 Watts were packaged with a universal 95 Watt cooler. But for 6th through 10th Generation 91, 95 and 125 Watt processors, Intel's specified 130 Watt stock cooler is sold separately.

• Intel Stock Coolers

Compared below are a few processor / stock cooler combinations with respect to TDP and Tcase specifications:

Example 1 ...... i7-2600K 95 Watts TDP / Cooler 95 Watts TDP / Tcase 72°C
Example 2 ...... i7-3770K 77 Watts TDP / Cooler 95 Watts TDP / Tcase 67°C
Example 3 ... i7-6700K 91 Watts TDP / Cooler 130 Watts TDP / Tcase 64°C

Note the 2600K and 3770K use the same 95 Watt cooler. Here's how the examples look on a graph:

Figure 7-1
​

The higher the cooler TDP is from the processor TDP, the lower the Tcase specification. Likewise, when the stock cooler is replaced with a higher TDP aftermarket cooler, IHS temperature (Tcase) as well as Core temperatures are lower. This means Tcase varies according to which cooler is paired with which CPU. In the examples above, the higher Tcase value of the 2600K suggests that it has a higher thermal tolerance than the 6700K, which is completely misleading, as the 6700K has a higher Throttle temperature.

While Tcase and Tjunction (Tj Max) specifications are both shown in the Datasheets, the Product Specifications website only shows Tjunction for 7th Generation and later, or Tcase for 6th Generation and earlier. For example, the 6th Generation 6700K and the 7th Generation 7700K share the same Design with identical Tcase and Tj Max specifications, but the processor's Generation determines which of the two Thermal Specifications is shown on the website.

Intel’s move away from using Tcase on their website synchronizes Desktop and Mobile Thermal Specifications. Mobile (laptop) processors don’t have an IHS, so they don’t have Tcase specifications; only Tj Max. Although users can’t monitor IHS temperature, Intel's intended purpose for providing Tcase specifications is primarily for developers of aftermarket cooling solutions. So from Core 2 processors in 2006 to today's Core i processors, the limiting Thermal Specification has always been Tj Max; not Tcase. For end users, this means Tcase is irrelevant.

Tj Max specifications are shown in the Datasheets in Section 16 - References, and in the monitoring utility Core Temp.

Figure 7-2​

• Tj Max specifications also vary with TDP specifications. Certain low TDP variants may Throttle below 90°C, while for others, the highest Tj Max value is 105°C. However, some motherboards for 9th and 10th Generation processors violate TJ Max by allowing users to increase Intel's thermal limit from 100°C (212°F) where most processors Throttle, to 115°C which can damage your CPU. Nevertheless, you should not run your processor near its thermal limit, just as common sense tells you not to drive a vehicle with the temperature gauge on red.

Figure 7-3
​

If your hottest Core is near its specified Tj Max Throttle temperature, then your CPU is already too hot. The consensus among well informed and highly experienced reviewers, system builders and expert overclockers, is that it's prudent to observe a reasonable thermal margin below Throttle temperature for ultimate stability, performance and longevity. So regardless of environmental conditions, hardware configurations, software workloads or any other variables, Core temperatures above 85°C are not recommended.

Section 8 - Overclocking and Voltage​

No two processors are identical; each is unique in voltage tolerance, thermal behavior and overclocking potential, which is often referred to as the "silicon lottery".

• Overclocking is always limited by two factors; voltage and temperature.​

As Core speed (MHz) increases, Core voltage (Vcore) automatically increases to maintain stability. However, it's not recommended to overclock using “Auto” BIOS settings, motherboard features or software utilities, as significantly more Vcore than necessary is applied to maintain stability, which needlessly increases Power and heat. It's instead highly recommended to use only "manual" Vcore in BIOS. Most overclocking guides explain how. Since overclocked processors can run more than 50% above rated TDP, high TDP air or liquid cooling is crucial.

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:

Figure 8-1​

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:

Figure 8-2​

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.

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. All processors reach a limit where an additional increase in Core voltage will not stabilize another 100 MHz increase in Frequency.

Here's an example of a Core Voltage / Frequency Curve:

Figure 8-3
​

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. Thermal testing is explained in Sections 10 through 12.

Remember to keep overclocking in perspective. For example, the difference between 4.5 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.

• CPU overclocking guide and tutorial for beginners


Section 9 - The TIM Problem​

Thermal Interface Material or “TIM” (thermal compound) facilitates better heat transfer from one surface to another. TIM can refer to either paste (pTIM) or solder (sTIM) or liquid metal. In 3rd Generation mainstream processors, Intel stopped using solder and instead started using paste between the “Die” and IHS, which resulted in higher Core temperatures, thus creating "The TIM Problem”.

In Core 2 and Core i 1st and 2nd Generation, as well as 9th and 10th Generation "K" and "X" processors, a specially formulated solder that contains "Indium" is used between the Die and IHS for good thermal conductivity. However, when paste is used between the Die and IHS, thermal conductivity is comparatively poor. This is primarily why 3rd through 8th Generation mainstream processors are more difficult to cool.

Additionally, 3rd through 8th Generation are "small Die" processors with significantly less surface area in contact with the IHS to transfer heat than 2nd Generation and earlier "large Die" processors. They also have more transistors densely packed into their small Die and consequently are more thermally sensitive to small increases in Vcore and Core speed.

Figure 9-1
​

In 3rd through 8th Generation mainstream processors, the sealant between the Substrate and IHS tends to be slightly too thick, which creates unwanted space between the Die and IHS. During assembly, this can also cause the paste to compress unevenly. And as paste has comparatively poor thermal conductivity, the effect is higher Core temperatures, with some processors showing wide deviations between Cores, or one Core which runs much hotter than its neighbors.

This encourages some overclockers to "delid" or remove their processor's IHS and replace Intel's pTIM with “liquid metal”, which has good thermal conductivity much closer to Indium solder. Typical results are dramatically lower Core temperatures with less deviation between Cores.

Beware that delidding will void your warranty, and if not performed carefully, can damage or destroy your processor.

Rather than delid using the risky razor blade or vice methods, you can safely delid with a "delidding tool":

der8auer Delid Die Mate 2
Dr. Delid
Rockit 88​

Note 1: Delidding requires that you use only liquid metal TIM between the Die and IHS. Paste (pTIM) will fail in a relatively brief period of time. Due to thermal cycling, a process known as “pump-out” will expel pTIM from between the Die and IHS, whereas liquid metal is very resistant to pump-out. Although Intel's pTIM is formulated to resist pump-out, it still degrades over time, losing its thermal bond with the Die. The most recommended liquid metal TIM is Thermal Grizzly Conductonaut.

For comparison, here’s a short list of TIM in order of thermal conductivity:

IHS to Die - Soldered CPUs

Indium .............................................................. 81.8 W/mk

IHS to Die - Liquid Metal

Thermal Grizzly Conductonaut ........... 73.0 W/mk
CoolLaboratory Liquid Extreme ........... 41.0 W/mk
CoolLaboratory Liquid Ultra .................. 38.4 W/mk
CoolLaboratory Liquid Pro ..................... 32.6 W/mk

IHS to Cooler - Paste

Thermal Grizzly Kryonaut Extreme ... 14.2 W/mk
Arctic Silver 5 .................................................. 9.0 W/mk
Arctic Cooling MX4 ...................................... 8.5 W/mk
Gelid Solutions GC-Extreme ...................... 8.5 W/mk
​

Silicon Lottery is a company that tests, bins and sells overclocked, delidded "K" CPUs. They also offer professional delidding services, and give the following figures on how much Core temperatures at 100% workload are improved by delidding:

10th Generation ............... Comet Lake - 5 to 12°C
9th Generation ... Coffee Lake Refresh - 3 to 7°C
8th Generation .............. Coffee Lake - 12 to 25°C
7th Generation .................. Kaby Lake - 12 to 25°C
6th Generation .......................... Skylake - 7 to 20°C
5th Generation ..................... Broadwell - 8 to 18°C
4th Generation ........... Devil's Canyon - 7 to 15°C
4th Generation ....................... Haswell - 10 to 25°C
3rd Generation ................... Ivy Bridge - 10 to 25°C
​

Except for 9th and 10th Generation, Core temperatures on processors with solder between the Die and IHS are typically within about 5°C above IHS temperature, which indicates good thermal conductivity. However, Core temperatures on processors with paste between the Die and IHS can vary up to 25°C above IHS temperature, which indicates poor thermal conductivity and inconsistent uniformity.

Here's how "The TIM Problem" looks on a graph:

Figure 9-2
​

Although 9th and 10th Generations use sTIM, the solder is much thicker than earlier soldered processors, which decreases thermal conductivity. Additionally, the Die in 9th Generation is twice as thick as earlier Generations, which further decreases thermal conductivity. Here’s a detailed explanation by Mechatronics Engineer, Roman “der8auer” Hartung:

Video 9-1

Core temperatures and IHS temperature converge at idle and diverge as load increases. Here’s how solder and paste differ between idle and 100% workload:

Figure 9-3​

Thermal behavior is relatively uncompromised at idle due to low Power dissipation. But as workload approaches 100%, poor thermal conductivity among processors with paste becomes apparent. Moreover, as Intel's pTIM degrades over time, 3rd through 6th Generation 22 and 14 nanometer processors, (launched 2012 through 2015), may no longer cool as well as when new. Delidding restores and upgrades thermal performance similar to that of earlier soldered processors.

Note 2: Intel uses engineering samples with soldered Integrated Heat Spreaders for testing and developing specifications.

 

[CompuTronix]

Update: Jan 3, 2021

Intel CPU Temperature Guide 2021
by CompuTronix

(continued)


Part 3: Tests and Methods


Section 10 - Thermal Test Tools

In order to properly test your Core temperatures, you'll need:

• A trusted analog, digital or infrared (IR) thermometer to measure Ambient temperature.

You'll also need the following Freeware utilities downloaded and installed:

• ........... CPU-Z
• ... Core Temp
• ........ Prime95

• ....................... Optional; Install Hardware Info if you'd like to see advanced monitoring details.
• ... Optional; Install SpeedFan if you’d like to use the “Charts” to see your thermal signatures.​

Note: Core Temp and Hardware Info (HWiNFO) are frequently updated and known to be quite accurate. However, many monitoring utilities will instead mislabel, misreport or “offset” thermal values for various sensors, which can be highly confusing and misleading. Also, be aware that when simultaneously running two or more monitoring utilities, it’s possible for them to interfere with one another.

Trying to check thermal performance by touch is like feeling a fireplace from 3 meters (about 10 feet). Since hundreds of millions of microscopic nanometer scale transistors are densely packed into a tiny Die, heat dissipates over relatively large areas and thermal gradients to the cooler, which is a considerable distance from the Cores at about 3 millimeters (about 0.1 inch); 3 millimeters = 3,000,000 nanometers.

Figure 10-1​

Although some heat dissipates to the substrate, socket and motherboard, most heat dissipates to the cooler through several thermal gradients; Cores > Die > internal TIM > IHS > external TIM > cooler. Consequently, even at 100% workload nothing will feel hot; exhaust airflow, heat pipes, cooling fins, radiator or water block will only feel warm, and liquid cooling tubes will have just a moderate temperature differential.

Section 11 - Thermal Test Basics​

The topic of processor temperatures can be very confusing. Unfamiliar terminology and specifications, misconceptions and widespread misinformation, conflicting opinions and inconsistent test procedures leaves users uncertain of how to properly check cooling performance. Moreover, when Ambient temperature isn't mentioned, and load and idle test conditions aren't defined, the Core temperatures you see on various websites and forums can be highly misleading.

In this Part of the Guide, load and idle test conditions are explained, as well as how Thermal Design Power, AVX Instruction Sets and Ambient temperature relates to thermal testing. Valid baseline Core temperatures can be found by replicating test conditions that conform to Intel's Datasheets. Applying a methodical approach minimizes variables so results will be consistent, repeatable and easier to compare. Here's how it's done:

There are three major test variables. When managed correctly, two variables become points of reference which are needed for valid test results. The remaining test variable determines your thermal performance at 100% workload and at minimum idle. Methods for properly conducting thermal tests include managing these variables:

• Environment - Intel tests their processors in a tightly controlled environment. Variables in Ambient temperature can be normalized to 22°C, which is a point of reference. Normalizing is explained under the Setup in Section 12.

• Hardware - Intel tests their processors on an open bench without a case. Variables in hardware configurations can be minimized by removing case covers and manually setting all fans and pump (if liquid cooled) to 100% RPM.

• Software - Intel tests their processors using a steady 100% TDP workload. Variables in test software can be eliminated by using Prime95, which is a point of reference. Small FFTs without AVX conforms to Intel's Datasheets.

The Datasheets provide guidelines needed for a coordinated and methodical approach. "Full load" is a popular but non-specific user term which could mean anything, so it's important to be very specific. Games, apps, streaming, rendering, transcoding and most utilities have partial, fluctuating workloads with fluctuating Core temperatures that are not well suited for testing thermal performance.

“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 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.

Figure 11-1
​

Note: As per Intel’s Datasheets, TDP and Thermal Specifications are validated “without AVX”. In version 29.8 and later, click on the AVX test selections that are not greyed out so that all three AVX boxes are checked, as shown above. In versions 27.7 through 29.4, AVX can be disabled by inserting CpuSupportsAVX=0 into the local.txt file, which appears in Prime95's folder after the first run. You can also use version 26.6 which doesn't have AVX. Further explanation concerning AVX Instruction Sets are detailed later in this Section.

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%:

Figure 11-2​

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 Small FFTs (AVX disabled) provides the correct workload for testing thermal performance. If Core temperatures don't exceed 80°C, your CPU should run the most demanding real-world workloads without overheating.

• TDP - Actual Power consumption (Watts) may vary from TDP specifications among the same CPU models due to differences in VID (Voltage IDentification), Auto Core voltage, BIOS and microcode updates. Also, motherboard stock settings may vary from Intel stock settings. TDP specifications are a Power "envelope" which is generally based on the fastest unlocked Hyper-Threaded (Flagship) processors. The key word in "Thermal Design Power" is Design.

For example, the i7-7700K and i5-7600K share the same Design and rated TDP at 91 Watts. Since the i5 doesn't have Hyper-Threading, it consumes about 12% less Power, so it doesn't reach TDP and runs about 4°C lower than the i7 with the same CPU cooler. Also, the i5 is 400MHz slower which consumes less Power. Although Core 2 processors don't have Hyper-Threading, TDP specifications are again based on the fastest Core speeds. So as the 3.0GHz Q9650 and 2.5GHz Q9300 are both 95 Watts, the slower CPU doesn't reach TDP.

This means when the fastest unlocked Hyper-Threaded (Flagship) processors run Prime95 Small FFTs without AVX, the processors should show steady Core temperatures and Power consumption (Watts) generally within +/- a few % of TDP at Intel stock settings. As such, Prime95 Small FFTs without AVX conforms to Intel's Datasheets as a valid 100% workload. It scales appropriately with all processors whether at stock settings or overclocked, regardless of rated TDP.

Figure 11-3
​

• AVX - Advanced Vector Extension (AVX) Instruction Sets were introduced with Core i 2nd Generation CPUs, then AVX2 with 4th Generation and AVX-512 with later Generations of High End Desktop (HEDT) CPUs as in certain X-Series, Extreme, i9s and i7s. Prime95 versions with AVX enabled impose an unrealistic 130% workload (see Figure 11-2) which can adversely affect stability and severely overload your CPU. 2nd and 3rd Generations are less affected, but Core temperatures on 4th through 10th Generations may be over 20°C higher.

Many 6th through 10th Generation motherboards address the AVX problem by providing “offset” adjustments (downclock) in BIOS. -3 (300 MHz) or more may be needed to limit Core temperatures to 80°C. Since 4th and 5th Generations don’t have AVX offsets, you can create individual BIOS Profiles for AVX and non-AVX software. Except for a few utilities and specialized computational apps, the AVX code in real-world apps (rendering / transcoding) and recent games is less intensive and shouldn’t exceed Prime95's workload without AVX.

Figure 11-4

Core i 1st Generation, Core 2, Celeron and most Pentium processors don't have AVX Instruction Sets, so they're not affected.

Under proper test conditions there are three relevant values:

Ambient temperature
Core temperatures at steady 100% workload
Core temperatures at minimum idle
​

Sections 12 and 13 will explain how to properly test your rig using standardized methods which normalize environmental variables, minimize hardware variables and eliminate software variables. Follow the "Setup" in both Sections to replicate Intel's test conditions. Each 10 minute test will find your valid "baseline" Core temperatures at steady 100% workload and at minimum idle.

Section 12 - Thermal Test 100% Workload​

Note 1: Keep in mind that we're thermal testing only. Stability testing is not within the scope of this Guide, which assumes your rig is properly assembled, configured and stable. If you're overclocked, then a combination of stress tests, apps or games must be run to verify CPU stability.

Prime95's default test, Blend, is a fluctuating workload for testing memory stability, and Large FFTs combines CPU and memory tests. As such, Blend and Large FFTs both have fluctuating workloads which aren't well suited for CPU thermal testing.

If OCCT's first CPU test, called "OCCT", is configured for Small Data Set and SSE (No AVX), then it's a steady 97% workload which is nearly identical to Prime95's Small FFTs without AVX. The second test, Linpack, is a fluctuating workload similar to Prime95 Blend. OCCT can be configured to terminate the tests at 85°C.

The "Charts" in SpeedFan span 13 minutes, and show how each test creates distinct thermal signatures.

Figure 12-1

Shown above from left to right: Small FFTs, Blend, Linpack and IntelBurn Test.​

Note the steady thermal signature of Small FFTs, which allows accurate measurements of Core temperatures. A steady 100% workload is key for thermal testing so the CPU, cooler, socket, motherboard and voltage regulator modules (VRM) can thermally stabilize.

Figure 12-2

Shown above from left to right: Small FFTs, Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.
​

Intel Extreme Tuning Utility is a fluctuating workload at about 80% TDP. AIDA64 has 4 CPU related stress test selections (CPU, FPU, Cache, Memory) which have 15 possible combinations that yield 15 different workloads and Core temperatures. The individual FPU test is about 115% TDP workload, the CPU/FPU combination is about 90%, all 4 tests combined is about 80% and the individual CPU test is only about 70%. All other AIDA64 test selections are fluctuating workloads which are suitable for stability testing, but not for thermal testing.

Setup:​

The objective of this test is to find your rig's maximum cooling capability at 100% workload. This allows Core temperatures to be tested under ideal conditions, which will later reveal how variables such as case covers and fan speeds affect temperatures under normal use.

Testing should be performed with your computer clear of desk enclosures or items that block airflow. Intel tests their processors on an open bench, without a case, so covers should be removed and all fans and pump (if liquid cooled) at 100% RPM.

Core temperatures increase and decrease with Ambient temperature.​

Testing near 22°C Standard Ambient is preferred so as to provide normal thermal headroom. During warmer months if adequate A/C isn’t available, then test late at night or early in the morning when Ambient is lowest. If you can’t test near 22°C, then you can "normalize" your results to establish a valid thermal "baseline". This minimizes variables so results will be consistent, repeatable and easier to compare.

Summer room temperatures are usually above 22°C, which decreases thermal headroom. If your Ambient is 5°C above normal, then subtract 5°C from your Core temperatures to normalize your test results. So if actual Core temperature is 80°C, then normalized Core temperature is 75°C.

Winter room temperatures are usually below 22°C, which increases thermal headroom. If your Ambient is 5°C below normal, then add 5°C to your Core temperatures to normalize your test results. So if actual Core temperature is 70°C, then normalized Core temperature is 75°C.

Due to a variable known as "leakage current", the relationship between Core temperatures and Ambient temperature isn't precisely 1:1. However, Core temperatures normalized to 22°C should be close to Core temperatures actually tested at 22°C. Normalizing establishes baseline Core temperatures so as Ambient changes, if you maintain your hardware configuration and BIOS settings, you have a consistent point of reference. You can repeat the test whenever you like to see if your rig is maintaining thermal performance.

Test:​

Run Prime95 Small FFTs with all AVX options disabled. For air or AIO (All-In-One) coolers 10 minutes is adequate, but for custom loops with a large coolant capacity, allow additional time for thermals to stabilize. Use your thermometer to monitor Ambient and use Core Temp to monitor Core temperatures.

Results:

Here’s how a well cooled rig should perform, while allowing for higher Ambient temperatures:

Figure 12-3
​

If actual Core temperatures exceed 80°C, you should upgrade your cooling and / or reduce Vcore and Core speed, regardless of Ambient temperature. If you only use your rig for gaming or never run highly demanding workloads such as rendering or transcoding, then repeat the test using CPU-Z > Bench > Stress CPU, which is a steady workload at about 80% that's more typical of games with the heaviest CPU workloads. If actual Core temperatures still exceed 80°C, then your cooling is again inadequate and should be upgraded.

Intel’s specification for Digital Thermal Sensor (DTS) accuracy is +/- 5°C. This means deviations between the highest and lowest Cores can be up to 10°C. Deviations on processors with "Turbo Boost" might exceed 10°C between the fastest and slowest Cores. Deviations on processors that have a flawed application of pTIM (external / internal or both) might exceed 10°C by several degrees.

Figure 12-4

Highest ..... 78°C
Lowest ...... 72°C
Average .... 75°C
Deviation ... 6°C
​

On processors with more than 2 Cores, the inner Cores typically run warmer because they’re insulated by the outer Cores. 2nd through 4th Generation processors are more affected due to the location of the Integrated Graphics Processor Unit (IGPU). Core temperatures are more evenly balanced on 5th through 10th Generation processors due improvements in physical layout.

Note 2: When viewing your temperatures in Core Temp, values that reach 81°C or higher will change from black to amber, which indicates caution. Simultaneously running two or more monitoring utilities could cause them to interfere with one another.

Record your actual and normalized Core temperatures including Ambient temperature for future reference. You can repeat the test with case covers installed, then again with fans and pump speeds set for normal use, which will reveal how these variables affect load temperatures.

Section 13 - Thermal Test Minimum Idle​

Although load temperatures are most critical, many users are equally concerned about idle temperatures. Look closely at the SpeedFan Charts above (Figures 12-1 & 12-2), where idle temperatures are shown between load temperatures. Note that some Cores have more "range" than others and idle lower. Core temperature sensors tend to be more accurate at high temperatures for Throttle protection, but due to calibration issues such as linearity, slope and range, idle temperatures may be less accurate.

If "SpeedStep", also called EIST (Enhanced Intel SpeedStep Technology), is disabled in BIOS, or Windows Power Options is set to "High performance", then depending on Vcore and Core speed, idle Power can exceed 30 Watts, which will result in high idle temperatures, especially when combined with high Ambient temperature.

Note 1: 6th Generation processors introduced "Speed Shift" technology in Windows 10, which responds much faster to changes in workload than "SpeedStep" due to having many more Core speed and Core voltage transition levels. This allows the processor to more quickly complete brief tasks then rapidly return to idle, which reduces overall Power consumption and increases efficiency.

Figure 13-1
​

Since 7th through 10th Generation Speed Shift is twice as fast as 6th Generation, some users complain of Core temperature spikes which can also cause fluctuations in fan RPM at idle. Motherboard manufacturers have implemented BIOS updates that include separate SpeedStep and Speed Shift settings with more flexible fan curves and time delay options.

Setup:​

The objective of this test is to find your rig's maximum cooling capability at minimum idle. This allows Core temperatures to be tested under ideal conditions, which will later reveal how variables such as case covers and fan speeds affect temperatures under normal use.

In order to find your lowest idle temperatures, use the previous Setup in Section 12. Additionally, SpeedStep and all "C" States must be enabled in BIOS. Also, if Windows Power Options for "Balanced" or "Power saver" is not set correctly, then SpeedStep will not work ... OR ... if Windows Power Options is set to "High performance", then SpeedStep will not work because Minimum processor state can‘t be set.

To check this, go to Settings > System > Power & sleep > Additional power settings > Change plan setting > Change advanced power settings > Processor power management > Minimum processor state. The default setting is 5%. If it's not, then correct it and click Apply.

Figure 13-2​

Restart into BIOS and confirm that you've saved your settings to a BIOS Profile. Next, change all settings to stock (Default / Auto) including Vcore. Check that SpeedStep and all C States are still enabled, then save and exit. Reboot into Windows and confirm that your rig is at minimum idle; no programs or screensaver running, and off line. No Dropbox or Folding or SETI or "tray-trash" running in the background, and just 1 or 2% CPU Utilization under the "Performance" tab in Windows Task Manager.

Figure 13-3

Use CPU-Z to confirm that Core Voltage and Core Speed has decreased as follows:

Core i

10th through 5th Generation 14 nanometer ......... about 0.7 Volts @ 800 MHz
4th Generation 22 nanometer .................................... about 0.8 Volts @ 800 MHz
3rd Generation 22 nanometer .................................. about 0.9 Volts @ 1600 MHz
2nd and 1st Generation 32 and 45 nanometer ... about 1.0 Volts @ 1600 MHz

Core 2

Core 2 45 nanometer ...... about 1.1 Volts @ 2000 MHz
Core 2 65 nanometer ... about 1.25 Volts @ 1600 MHz

Figure 13-4

Use Core Temp to confirm that Power has decreased as follows:

Core i

10th through 3rd Generation 14 and 22 nanometer ... about 2 Watts
2nd Generation 32 nanometer ............................................ about 4 Watts
1st Generation 45 nanometer ............... about 12 Watts (Socket 1156)

Figure 13-5​

Note 2: Fluctuations are normal and expected. Power (Watts) isn't measured on 1st Generation Socket 1366 variants and Core 2 processors. Power may be lower on processors with 2 Cores and higher on those with more Cores. Idle Volts and Watts may differ depending on motherboard and BIOS.

Test:
​

Allow your rig to idle undisturbed. For air or AIO (All-In-One) coolers 10 minutes is adequate, but for custom loops with a large coolant capacity, allow additional time for thermals to stabilize. Use your thermometer to monitor Ambient and use Core Temp to monitor Core temperatures.

Results:​

10th through 4th Generation with high-end cooling may idle as low as 3°C above Ambient. With low-end cooling, around 10°C above Ambient is more typical. 3rd, 2nd, certain 1st Generation and Core 2 processors may idle a few degrees higher. Some 45 nanometer Core 2 variants have sensors that "stick" in the 40s showing false high idle temperatures, and some 6th Generation variants show false low idle temperatures below Ambient. Idle temperatures may not be very accurate. Better cooling and lower idle Power yields lower idle temperatures.

Record your actual and normalized Core temperatures including Ambient temperature for future reference. You can repeat the test with case covers installed, then again with fans and pump speeds set for normal use, which will reveal how these variables affect idle temperatures. When finished testing, restore your system to its normal configuration.

Part 4: Tips and Insights


Section 14 - Improving Temperatures​

Whether your computer is an overclocked gaming rig, a stock workstation or an all-purpose family PC, achieving the lowest possible temperatures always depends on components, configuration and airflow. Here's a few tips:

• ... Intel coolers are barely adequate at stock. If you want to overclock then upgrade your cooler.
• ........ BIOS updates sometimes include Vcore optimizations, which can drop Core temperatures.
•........... Manually decreasing Vcore drops Power and heat. Most overclocking guides explain how.
• ...... Disabling Hyper-Threading decreases Power about 12% and Core temperatures about 4°C.
• ............. Disabling Multi Core Enhancement (MCE) will also help to decrease Core temperatures.
• ............ Disabling Turbo Boost is another option which will further decrease Core temperatures.
• ........... Decreasing Uncore Multiplier (Ring Ratio) on Core i CPUs decreases Core temperatures.
• ......... Decreasing Maximum processor state in Power Options will decrease Core temperatures.
• ............ Memory overclock or XMP Profiles can cause Core i CPUs to run several degrees hotter.
• ...... Graphics cards with Axial fans exhaust heat into your case, increasing internal temperature.

Figure 14-1

• ..... Cards with blowers exhaust heat away from your case, which is cooler for SLI or CrossFire.
• ......... A hot case stresses SSDs, HDDs, memory, chipsets, voltage regulators and power supply.
• .......... High performance computers need unrestricted airflow in and out, so location is critical.
• ......... If load temperatures drop over a few °C with case covers removed, it means poor airflow.
• ... Good cable management creates good airflow. Use zip-ties, patience and attention to detail.
• ..... Quality fans are important, but if you want a quiet computer then consider a fan controller.
• ......... If your CPU is too hot, you may need to adjust fan curves in BIOS or your software utility.
• ........... If your case just doesn't breathe well, then perhaps it's time to upgrade to one that does.
• ....... If your rig runs 24/7, then dust is accumulating and moving parts are wearing prematurely.
• ........... Clean the dust out of your rig. Perform regular Planned Maintenance Inspections (PMs).
• ............ Replace your TIM. Some Thermal Interface Materials may begin to fail at about 3 years.
• ...... If IHS / cooler surfaces aren't perfectly flat, "lapping" can drop load temperatures a few °C.
• ........ Delidding will significantly drop Core temperatures on 3rd through 8th Generation CPUs.

Thermal Paste Round-up: 85 Products Tested

Choosing an aftermarket cooler: Air Cooling vs Water Cooling

Alternatives to the Hyper 212+/Evo for budget cooling​

Liquid coolers, whether high-end custom loops or All-In-One (AIO), sometimes called Closed Loop Coolers (CLC), will eventually fail. It’s not a question of if; it’s a question of when. AIOs are notorious for premature pump failures, especially those which run 24/7. Moreover, galvanic corrosion (dissimilar metals; aluminum radiator & copper water block) creates sediment, which along with bio-growth, obstructs flow. Custom loops can be drained and cleaned, are either all copper or all aluminum and use high end pumps.

Air coolers, especially high-end units with dual or push-pull fans, tend to be extremely reliable as fan failures are infrequent. However, Intel stock coolers, as well as several aftermarket low-end units with "push-pin" fasteners are notorious for temperature problems due to push-pins pulling loose from the motherboard. Coolers with push-pins should be avoided in favor of coolers which use proper fastening hardware with a back-plate.

Installing Intel's stock cooler

Video 14-1


Section 15 - Summary and Conclusion

• ......................................... Standard Ambient temperature is 22°C or 72°F.
• ................................................. Ambient affects all computer temperatures.
• ............................ No temperatures can be less than or equal to Ambient.
• ................................ As Ambient increases, thermal headroom decreases.
• ................. CPU temperature in BIOS is higher than in Windows at idle.
• ........................................ Tcase is IHS temperature; not Core temperature.
• ................ Tj Max (Throttle temperature) is the thermal limit; not Tcase.
• .................. For end users, Tcase is an irrelevant Thermal Specification.
• ................ Core temperature is the standard for thermal measurement.
• ......................... Core temperatures respond instantly to changes in load.
• .......... Core temperatures are driven by Power consumption and load.
• .......................... Core temperatures above 85°C are not recommended.
• ........................................................ Core temperatures below 80°C are ideal.
• ..................................... Package temperature is typically the hottest Core.
• ................... Overclocking is always limited by voltage and temperature.
• ....... Excessive voltage and temperature accelerates Electromigration.
• ............... Prime95 Small FFTs without AVX is ideal for thermal testing.
• ...... Deviations between highest and lowest Cores may be up to 10°C.
• ... Core temperature sensors are more accurate at high temperatures.
• .... Idle temperatures tend to be less accurate than load temperatures.
• ....... The definition of "full load" is a steady-state 100% TDP workload.
• ....... The definition of "idle" is minimum activity at 1% CPU Utilization.
​

The conditions detailed in this Guide for testing thermal performance at steady 100% workload conform to Intel’s Datasheets for valid results. If your rig doesn’t exceed 80°C, then it should run the most demanding real-world workloads without overheating. If your rig does exceed 80°C but you just game or never run highly demanding workloads such as rendering or transcoding, then run CPU-Z > Bench > Stress CPU which is a steady 80% workload. If you still exceed 80°C, then cooling performance is inadequate.

Section 16 - References​

- 1) Intel® Processor Temperature FAQ

- 2) Intel® Product Specifications

- 3) Intel® Core™ Processors Technical Resources

- 4) Tom's Hardware Glossary

- 5) Inside Intel's Secret Overclocking Lab

- 6) TDP and Turbo Explained

- 7) 10th Generation Intel® Core™ Processor Families for U, H, and S Platforms Datasheet, Volume 1

- 8) 8th and 9th Generation Intel® Core™ Processor Families Datasheet, Volume 1

- 9) How to Stress-Test CPUs

- 10) 7th Generation Intel® Core™ X-Series Processor Family ™ i5-7640X and i7-7740X Datasheet, Volume 1

- 11) 7th Generation Intel® Processor Datasheet for S-Platforms, Volume 1

- 12) 6th Generation Intel® Core™ X-Series Processor Family ™ i7-7800X, i7-7820X, and i9-7900X Datasheet, Volume 1

- 13) Intel® Core™ i7 Processor Family 6xx0 for LGA2011-v3 Socket Datasheet, Volume 1

- 14) 6th Generation Intel® Processor Datasheet for S-Platforms, Volume 1

Core Voltage vs. VID

Video 16-1
​

- 15) Soldered CPU vs. Paste

- 16) Desktop 5th Generation Intel® Core™ Processor Family Datasheet, Volume 1

- 17) Intel® Core™ i7 Processor Family 5xx0 for LGA2011-3 Socket, Thermal Specifications

Intel Discusses i7-4790K Core Temperatures and Overclocking

Video 16-2​

- 18) Desktop 4th Generation Intel® Core™ Processor Family, Datasheet, Volume 1

- 19) Intel® Core™ i7 Processor Families 3xx0, 4xx0 for LGA2011-0 Socket Thermal Specifications

- 20) Desktop 3rd Generation Intel® Core™ Processor Family, Desktop, Thermal Specifications

- 21) i7-3770K vs. i7-2600K: Temperature, Voltage, GHz and Power-Consumption Analysis

- 22) 2nd Generation Intel® Core™ Processor Family Desktop, Thermal Specifications

- 23) Measuring Processor Power: TDP

- 24) Intel® Core™ i5-600/i3-500 Desktop Processor, Thermal Specifications

- 25) CPU Monitoring With DTS/PECI

- 26) Intel® Core™ i7-900 Desktop Processor Extreme Edition Series and Intel® Core™ i7-900 Desktop Processor Series Datasheet, Volume 1

- 27) Intel® Core™ i7-800 and i5-700 Desktop Processor Series Thermal Specifications

- 28) Intel® Core™2 Extreme Processor QX9000 Series, Intel® Core™2 Quad Processor Q9000, Q9000S, Q8000, and Q8000S Series Datasheet

- 29) The Truth About Processor "Degradation"

- 30) Intel® Core™2 Extreme Quad-Core Processor QX6000 Sequence and Intel® Core™2 Quad Processor Q6000 Sequence Datasheet

- 31) Temperature measurement in the Intel® Core™ Duo Processor

°C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C°


I hope this Guide has given you a clear perspective of Intel processor temperatures and has answered your questions. Thank you for reading.

CompuTronix


About the Guide​

The Intel Temperature Guide is the result of more than 9,000 hours of ongoing research and hands-on testing spanning over 14 years. It is frequently updated as new information becomes available.

Published

2007 ................................ Core 2 Duo Temperature Guide
2007 ........... Core 2 Quad and Duo Temperature Guide
2009 .................... Core i and Core 2 Temperature Guide
2013 ... Intel Temperature Guide (Update Jan 3, 2021)


About the Author

Based in Charlotte, North Carolina, USA. Interests include computers, electronics, technology, sailing and flying.

Experience: Building, overclocking, upgrading and troubleshooting PC’s since 1994.
Background: Medical Imaging Electronics - MRI Engineer. Aviation Electronics - US Navy Aircrew.​

 

[Graybush]

This Guide is recommended reading!