Once you decide on a specific processor brand and type, compare processor numbers to verify the processor includes the features you are looking for. The first digit in the four-number sequence indicated the performance and feature level, the second indicated the processor generation, and the next two are SKU numbers. Although sensors are factory calibrated by Intel, deviations between the highest and lowest Cores may be 10C.
Sensors are more accurate at high temperatures to protect against thermal damage, so idle temperatures may not be accurate. Core temperature is the standard for thermal measurement. Core temperatures respond instantly to changes in load.
Your highest temperatures will occur when running test utilities. Temperatures are typically lower during real-world everyday workloads such as processor intensive applications or gaming. Section 6 - Throttle Temperature Also called "Tj Max" Tjunction Max , this is the Thermal Specification that defines the Core temperature at which the processor will Throttle reduce clock speed to protect against thermal damage.
Although Intel processors are capable of operating above 90 C, we also know that excessive heat kills electronics. Sustained Core temperature greater than 80 C is too hot for ultimate stability, performance and longevity.
All values are based on Intel documentation. This Section will put the Specifications into perspective, and explain why Thermal Design Power, Tcase and Tj Max sometimes seem to conflict with recommended real-world Core temperatures. When this 95 Watt cooler was matched with the 95 Watt i7 K, Tcase was calculated and measured at 72C.
When the same 95 Watt cooler was packaged with the 77 Watt i7 K, Tcase was calculated and measured at only 67C shown above in Section 7. Tcase Specifications are determined by the stock cooler TDP. The differences are Core Count, Cache, Instruction Sets and Hyperthreading, the latter of which has a pronounced effect on Core temperatures. When sustained Core temperatures exceed 80C, some processors may become unstable. See Sections 5. Section 9 - Overclocking and Voltage Overclocking is always limited by two factors; voltage and temperature.
As Core speed MHz is increased above a level unique to each processor silicon lottery , Core voltage Vcore must also be increased to maintain stability. This increases power consumption Watts which results in increased Core temperatures. Even when using manual Vcore settings, excessive Vcore and temperatures may result in accelerated "Electromigration" - Google This prematurely erodes the traces and junctions within the processor's layers and nano-circuits, which will eventually result in blue-screen crashes that become increasingly frequent over time.
One of them is called TCase , something that only includes Intel CPUs and which is very useful in different situations. As we well know, both Intel and AMD strive to be accurate in reflecting concepts such as temperature or consumption, all through sensors that can be located on the processor itself or on the motherboard.
In addition, to measure certain parameters such as impulse or voltage in nanoseconds, they need a series of internal sensors that are also useful in concepts such as the one we are going to discuss next. So that Tcase is kinda useless to us that may be a reason why they removed it in the 7th gen cpu specs on their site.
Profanity is strictly forbidden! Tj Max has always been the limiting Thermal Specification; not Tcase. Intel does not install, test, then remove a Tcase sensor from retail samples and ship them out to buyers. But yes, you're right; Tcase is a useless spec except to developers of cooling solutions. To the end user like you and me, Tcase is a confusing and misleading specification that should have been changed to Tjunction Tj Max years ago, just as they finally did for the release of 7th Gen Kaby Lake this past January.
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