Question Computer freezes while in game, 72 degrees close to TCase

Jul 8, 2020
Hello there.

My computer shuts down while in game.

For example, GTA 5, CS: GO.

On the load, the processor runs at 71-72 degrees. Then the screen freezes, the image remains stable. It says no signal to use after 1 minute. I have to restart the computer.

But my brother was playing Unturned for 5 hours, but he never froze in his game. The processor temperature is 67 degrees.

Is there a link between them?

The whole system temperature;

MOBO: 47 Degrees
GPU: 55 Degrees
HDD: 37 Degrees
CPU: Absolutely 70+

Is the computer freezing problem in the processor at 71-72 degrees? On the site of Intel, the TCase value is given as 71.9 degrees. It is the same as my playing temperature, but lower in the game my brother is playing.

CPU: Core2 Quad Q9505@2.83 GHz
GPU: Sapphire RX 460 2GB
Jul 8, 2020
Update: Im playing 20 min. CPU 58 degree. Again freeze.

I dont know what can i do. I don't know the source of the problem.


Intel Master
72 degrees close to TCase

... processor runs at 71-72 degrees ...
Is there a link between them?

Is the computer freezing problem in the processor at 71-72 degrees? On the site of Intel, the TCase value is given as 71.9 degrees.

CPU: Core2 Quad Q9505

On behalf of Tom's Moderator Team, welcome aboard!

There is no link between your Core temperatures and Tcase. For the benefit of other Forum Members and our visiting readers:

Tcase is not Core temperature

Intel's Tcase specification is very misleading and has been confusing users since 2006. The temperature value of 71.9°C that you see on Intel's Product Specifications website is indeed Tcase. However, Intel desktop processors have not just one, but two thermal specifications; "Tcase" and "Tjunction".

Tjunction is also known as "Tj Max" or "Throttle" temperature. This is the Core temperature at which the processor will reduce Core speed and Core voltage to safeguard against thermal damage. If you download and run "Core Temp" you can see Tj Max. For your Core 2 Q9505, Tjunction is 100°C, but that does not mean it's OK to run it that hot.

Here's the nominal operating range for Core temperature:

Core temperatures above 85°C are not recommended.

Core temperatures below 80°C are ideal.

Intel's Datasheets (which most users never read) are detailed technical documents that show both Tcase and Tjunction specifications (see pages 66 & 73). Intel's Product Specifications website (which some users have seen) is instead a quick reference that shows only "Tcase" for 6th generation and earlier processors (including Core 2 processors), or "Tjunction" for 7th generation and later, but not both. The processor's generation determines which of the two thermal specifications is shown on the Product Specifications website.

In the Datasheets "Tjunction" (Temperature Junction) is called "Tj Max" (Temperature Junction Maximum) or "Throttle" temperature. Likewise, in the Datasheets "Tcase" (Temperature Case) is called "Tcase Max" (Temperature Case Maximum), which is "IHS" (Integrated Heat Spreader) temperature.

Since the Tcase specification pertains to CPU coolers, Intel's intended purpose for providing this specification was primarily for developers of aftermarket cooling solutions. Unfortunately, a great deal of widespread misinterpretations among users could've been avoided if Intel had limited Tcase to internal use and those with non-disclosure agreements, and had instead used the Tj Max specification on their Product Specifications website for all their processors.

Moreover, since the cooler on laptop (mobile) processors is seated directly on the silicon "Die" which contains the Cores, they don't have an IHS, so they don't have a Tcase specification; only Tj Max. Regardless, unlike the Product Specifications website, the Datasheets use proper terminology. Referring to the Datasheets instead of the Product Specifications website eliminates the confusion surrounding Intel's specifications. As per the Datasheets, and for the record:

Tcase Max is a specification for CPU coolers
Tcase is IHS temperature

Tj Max is a specification for Throttle protection
Tjunction is Core temperature
Tcase is completely unrelated to your "PC case" or "chassis". Users can't measure Tcase because it's a factory only thermal measurement performed on engineering samples using a thermocouple sensor embedded in the external surface of the Integrated Heat Spreader (IHS), which is the CPU's protective metal "case" whereupon the cooler is seated. Retail processors do not have this sensor, so it's not possible for you to monitor IHS temperature.

Core temperatures are instead measured by individual Digital Thermal Sensors (DTS) located deep within each Core at the transistor "Junctions" which are the heat sources where temperatures are highest. This means IHS temperature (Tcase) is significantly lower than Core temperature (Tjunction). As such, Tj Max (Throttle temperature) is your thermal limit; not Tcase. For end users, this means Tcase is irrelevant.

Also, keep in mind that Core temperatures increase and decrease with ambient temperature, for which the International Standard for "normal" ambient (room) temperature is 22°C or 72°F.

At the top of our Forums you'll see "STICKY THREADS" which are valuable information resources that are permanently "stuck" in place so they're always available for everyone's benefit. If you look at the top of the CPUs Forum where you posted your thread, you'll see a Sticky that has all the information you need: Intel Temperature Guide - you might want to give it a read.

Once again, welcome aboard!

CT :sol: