tcase What is TCase on Cpu

[POWER_ID]

So recently i checked at intel website for my cpu info and the intel said TCase 72.6°C and what those tcase mean and if i render something or at gaming my cpu temp always above 78°C so is that fine or what should i do?

[minibois]

31 minutes ago, Prius Is Suck said:

So recently i checked at intel website for my cpu info and the intel said TCase 72.6°C and what those tcase mean and if i render something or at gaming my cpu temp always above 78°C so is that fine or what should i do?

If you click the little question mark, it will explain:

Quote

Case Temperature is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS).

So either the temperature readout is wrong in your program, or your CPU is thermal throttling. EDIT: or Intel changed terminology :^)

 

In any case, be sure to clean your PC and apply new thermal paste.

[POWER_ID]

2 minutes ago, minibois said:

If you click the little question mark, it will explain:

So either the temperature readout is wrong in your program, or your CPU is thermal throttling.

 

In any case, be sure to clean your PC and apply new thermal paste.

Ouh my thermal paste is ~4-5 years old? And do you watch ltt for bulk thermal paste i use that, thank you For your advice, maybe in the future i will upgrade to i5 3570 so i need to buy new thermal paste

[Kilrah]

Post above is wrong. 

 

On old CPUs they specified TCase which is basically the temperature on the top of the CPU where the heatsink touches. Monitoring programs however measure Tj, i.e. the temperature of the silicon itself. That can go up to 100°C, and when it does the temp at the cooler interface will be the 72.6°C due to the heat spreader's thermal resistance.

 

Now they just specify Tj max at 100°C instead which makes a lot more sense since that is actually measurable unlike Tcase, but in any case you're all good.

[Senzelian]

20 minutes ago, minibois said:

So either the temperature readout is wrong in your program, or your CPU is thermal throttling.

I don't think either is the case.

Intel replaced Tjunction with Tcase (or the other way around on more modern CPUs)

Quote

Tcase max is measured by characterizing a socketed processor with an integrated heat spreader (IHS) for operation within an assembled system. This specification is set to ensure the processor does not exceed its operating temperature so long as the system is able to provide adequate cooling to maintain the top of the IHS at this temperature. This is primarily intended for system manufacturers in assessing their system design.  

https://www.intel.co.uk/content/www/uk/en/support/articles/000005597/processors.html

 

In the Tjunction part of that page Intel talks about the DTS (digital thermal sensor) on the CPU die, which can be monitored, to see how close temperatures are getting to Tjunction.

They also say that Tjunction is the temperature at which "internal thermal control mechanisms" start to lower power consumption and clock speed to prevent a CPU from overheating.

 

Now, iirc the Tjunction for his CPU is around 85°C or 90°C, which means it's all good.

But replacing the thermal paste is a good idea nontheless!

 

[minibois]

3 minutes ago, Senzelian said:

I don't think either is the case.

Intel replaced Tjunction with Tcase.

 

In the Tjunction part of that page Intel talks about the DTS (digital thermal sensor) on the CPU die, which can be monitored, to see how close temperatures are getting to Tjunction.

They also say that Tjunction is the temperature at which "internal thermal control mechanisms" start to lower power consumption and clock speed to prevent a CPU from overheating.

 

Now, iirc the Tjunction for his CPU is around 85°C or 90°C, which means it's all good.

But replacing the thermal paste is a good idea nontheless!

Thanks for the information, that's really helpful.

I basically just copied the explanation of Tcase given on the Intel ARK website for OP's CPU, which I would have guessed they would have updated as their terminology switched (as the ARK redesign happened not that long ago, so I kinda expected them to changed the terms I guess).

 

I kinda assumed OP should clean their PC + apply new thermal paste based on their signature:

Quote

Intel i5 2400 with Intel stock cooler @65° idle (cooler found at attic)

  65 C idle is not great.. I mean I get Indonesia has a warm climate, but that can hardly be good.

6 minutes ago, Kilrah said:

Post above is wrong. 

 

On old CPUs they specified TCase which is basically the temperature on the top of the CPU where the heatsink touches. Monitoring programs however measure Tj, i.e. the temperature of the silicon itself. That can go up to 100°C, and when it does the temp at the cooler interface will be the 72.6°C due to the heat spreader's thermal resistance.

 

Now they just specify Tj max at 100°C instead which makes a lot more sense, but in any case you're all good.

Feel free to quote me whenever you have corrections on my post, helps me learn something new and makes sure I can acknowledge I was wrong to make sure there is no misinformation present in my posts

[Purgatory420]

On 4/7/2020 at 12:55 AM, New display name REQUIRED said:

Ouh my thermal paste is ~4-5 years old? And do you watch ltt for bulk thermal paste i use that, thank you For your advice, maybe in the future i will upgrade to i5 3570 so i need to buy new thermal paste

How you got ram, gpu free and motherboard in so much discount

[Guest]

On 4/6/2020 at 12:41 PM, Kilrah said:

Post above is wrong. 

 

On old CPUs they specified TCase which is basically the temperature on the top of the CPU where the heatsink touches. Monitoring programs however measure Tj, i.e. the temperature of the silicon itself. That can go up to 100°C, and when it does the temp at the cooler interface will be the 72.6°C due to the heat spreader's thermal resistance.

 

Now they just specify Tj max at 100°C instead which makes a lot more sense since that is actually measurable unlike Tcase, but in any case you're all good.

It's the cpu socket temp. (Or other mainboard ambient related temp sensor when applicable.)  There is not a sensor on the top of the IHS plate unless you install one there. It's an off-die / off chip sensor. 

 

Tcase is literally the ambient temp. The measure in difference to gradient at which the stock cooler applied towards Thermal Design Point a cooler can dissipate. 

 

T-Junction is not the same as Tcase temp. TJ max is the maximum allowed at the cpu die (100c Intel 90c Zen2 and up).

 

Leaving the Cpu max temp threshold at the core sensor a bit higher, in Zen/Zen+ 95c and Zen2/3 90c with a Therm trip higher than 100c, often around 110/115c. Intel chips 100c throttle and 115c therm trip.

 

For reference to those with Ryzen chips, the official Cpu high temp alert is 70c. When a system is all defaults, sets cpu fan to 100% duty cycle. 

 

The T-Case is almost always near the same temp as the High temp alert from the cpu to command 100% cooling duty cycle of which the user can only intervein this temperature limit to 75c on any modern AM4 board.

 

edit:

lol. 

Oh shit just noticed this thread was necro as fuck.