Question CPU Package in HWinfo

LeviTech

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Sep 27, 2021
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Hi all.
I just want to know two things, if the temp showned on the CPU Package in HWinfo is related to the tcase or tjunction?
And the CPU Package temp can be different from Core temperatures?

Thank you.
 

LeviTech

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Sep 27, 2021
283
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I've read that thread but I didn't understand if it refers to tcase or tjunction...I think its tjunction, because as I read, tcase can't be measure by software, but I really don't know.
 
Hi all.
I just want to know two things, if the temp showned on the CPU Package in HWinfo is related to the tcase or tjunction?
And the CPU Package temp can be different from Core temperatures?

Thank you.

Not quite following your question.

"related to the tcase or tjunction".....

I'd think it is not "related" to either.

It's the temp at the sensor point, varying moment to moment.

Tcase and tjunction are some other constant number, likely higher.

If tjunction is 100 and the sensor says 44, the difference is 56, but I assume that's not what you need to know?
 

LeviTech

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Sep 27, 2021
283
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Intel CPU's have a max temp of 72º for tcase and most of the newer CPU's have 100º for tjunction.
My question is, CPU package in hwinfo and in all temp software, are related to the tcase or tjunction?
I think its tjunction, because as I read in some pages/foruns, tcase can't be measure by software, but I really don't know.
 
The temperature sensors likely support thermal management based on TJunction. Tcase is mostly for manufacturers who are designing a cooling system.

To also answer a previous question, yes Package temperature can vary from the reported "CPU" temperature.
 
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CompuTronix

Intel Master
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I just want to know two things, if the temp showned on the CPU Package in HWinfo is related to the tcase or tjunction?
And the CPU Package temp can be different from Core temperatures?

LeviTech,​


CPU Package in HWiNFO is related to Tjunction.
CPU Package temperature differs from Core temperatures, but typically corresponds to the "hottest" Core.

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

Guys,

Intel Desktop processors have two Thermal Specifications.

"Tjunction" (Temperature Junction) is also called "Tj Max" (Temperature Junction Maximum) or “Throttle” temperature. This refers to "Core" temperatures which are measured with Digital Thermal Sensors (DTS) at the heat sources near the transistor "Junctions" deep inside each Core where temperatures are highest.

"Tcase" (Temperature Case) is also called "IHS" (Integrated Heat Spreader) temperature. This refers to factory only thermal measurements using CPU Engineering Samples which have an analog "Thermocouple" sensor embedded in the top-center of the IHS (Case) where the stock cooler is seated.

Core temperatures are considerably higher than the surface temperature of the IHS due to differences in the proximity of sensors to heat sources.

Both Thermal Specifications are shown on Intel’s "Datasheets", which are detailed technical documents. But 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, which means the processor's Generation determines which of the two Thermal Specifications is shown on the website.

Tcase has always been a highly misleading and confusing specification, because 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.

Users can't monitor Tcase (IHS temperature) because retail processors do not have a Thermocouple sensor, nor is there any software to monitor Tcase.

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. Intel has never corrected these confusing inconsistencies in their documentation.

Intel's intended purpose for providing Tcase specifications are 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 Tjunction (Tj Max); not Tcase. For end users, this means Tcase is irrelevant.

Furthermore, the term “CPU temperature" is commonly misused as a general term for any processor temperatures. "CPU" temperature is considered to be synonymous with "Package" temperature, where both correspond to the "hottest Core" 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.

You might want to read my Guide.

CT :sol:
 
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