CPU Temperature

Abdul Samad · June 20, 2016

Hy i am new here

I had few questions regarding CPU Temperature.....

1. What is T Case.

2. What is TJ Max.

3. What is difference between T Case TJ Max.

4. What is the Value of TJ Max.

5. After Exceeding T Case temperature does the life span of CPU is reduced.

Please answer all the questions briefly

Thanks in Advance ...

UnknownEngineer · June 20, 2016

Welcome to the forum.

1. T case, measured by a sensor imbedded into the heatspreader itself.

2. Tj max, or Thermal junction max. Basically the temperature limit at which the CPU will A: Turn off. B: Get damaged

3. T junction is measured off the actual cores themselves, T case is measured of the heat-spreader.

4. Usually 105C on intel and AMD CPU's, can be lower on some other devices, some GPU's/CPU's could have a Tj max of 90C for an example.

5. Yes, just as with Tj max. If either of the mentioned sensors exceed their specified limits the CPU will most likely cut power to itself.

EDIT:Source

SnowyMus · June 20, 2016

52 minutes ago, Abdul Samad said:

Hy i am new here

I had few questions regarding CPU Temperature.....

1. What is T Case.

2. What is TJ Max.

3. What is difference between T Case TJ Max.

4. What is the Value of TJ Max.

5. After Exceeding T Case temperature does the life span of CPU is reduced.

Please answer all the questions briefly

Thanks in Advance ...

1. This is the maximum temperature of the integrated heat spreader (the bit of metal with the CPU markings on it, and where you rest the heatsink) under normal use.

2. Tjunction Max is the temperature of the CPU die (the processor itself). Approaching this will result in the CPU thermal throttling. Exceeding it can result in a shutdown to save the CPU's life.

3. They're different temperature sensors used for slightly different things.

4. Most Intel CPUs can go at around 100-105 degrees.

5. Technically, the heat spreader's temperature isn't the same as the CPU's temperature. However, keeping the CPU hot can lower its lifespan, and a hot heat spreader typically means a hot CPU.