Help with Temp...

[queue]

gud day guys..

i have already read the temp guide for the CD2's but i still have a question...

If my Tjunction max is 100 C, would it also mean that the maximum temp my cpu can handle is 100 C?
Is it ok if i would ran my cpu with temp above 70 C?

tnx in advance...

 

[amd_fanboi]

HELL NO!!! usually you want to go with less than 70C...

from Graysky's guide; one of the stickies in the OC section


I may be misunderstanding it, but as I read it, the thermal specs are the upper limit for the "case temp." No C2D or C2D quad processor actually has a sensor for "case temp" as defined by Intel. To measure this, you would need to place a sensor on the top of your IHS right in the center. C2D/quads have INTERNAL sensors, not external sensors. Some software and BIOS's can approximate this "case temp," but without a physical sensor there, you're just guessing. I freely admit that I have no idea what the temperature difference is between what the core temp and the case temp... some people think it's 15 °C which I do not agree with at all. I think people are mistakenly confusing this with the difference between the constant Intel uses to calculate your core temp from the value the DTS (digital thermal sensor).

All C2D and C2D quad chips have a DTS inside the cores. For non-quad C2D chips, that constant is 85. So your Core Temp = 85 - DTS where DTS is the number the DTS is reporting. For a quad C2D chip, the constant is 100. So Core Temp = 100 - DTS. THIS DOESN'T MEAN THAT THE LIMIT FOR THE CHIP IS 100 °C!

I like to keep my core temps under 65 °C. I may be using a conservative number here, but I don't want to replace my chip anytime soon. If you don’t care about the longevity of your chip, you can likely use higher numbers. I have read about people running their chips right up to the factory shutdown/auto throttle down temp of 85 °C. It’s your chip, do what you want.

 

[Evilonigiri]

70C is really pushing it. I'd say to stay safe, stick with what the above said, under 65C for core temp.

 

[CompuTronix]

queue, the short answer is no. Intel is not clear about this, however, the temperature scale shown in the Guide which applies to your processor displays Tcase Max and Tjunction in red. Tcase Max is always the limiting specification for temperatures. If Tjunction is allowed to approach Tjunction Max, then Tcase Max is exceeded.

amd_fanboi, with all due respect for my Sticky neighbor, graysky is not well informed regarding the following:

"No C2D or C2D quad processor actually has a sensor for "case temp" as defined by Intel. To measure this, you would need to place a sensor on the top of your IHS right in the center. C2D/quads have INTERNAL sensors, not external sensors. Some software and BIOS's can approximate this "case temp," but without a physical sensor there, you're just guessing. I freely admit that I have no idea what the temperature difference is between what the core temp and the case temp... some people think it's 15 °C which I do not agree with at all. I think people are mistakenly confusing this with the difference between the constant Intel uses to calculate your core temp from the value the DTS (digital thermal sensor)."

The information in my Temp Guide is correct regarding these points. From the Core 2 Quad and Duo Temperature Guide: http://www.tomshardware.com/forum/221745-29-core-quad-temperature-guide

Section 1: Introduction

Intel provides separate thermal specifications for 2 different sensor types; a CPU Case (not computer case) Thermal Diode located within the CPU die between the Cores, and Digital Thermal Sensors located within each Core. The Case Thermal Diode measures Tcase (Temperature Case), which is CPU temp, and the Digital Thermal Sensors measure Tjunction (Temperature Junction), which is Core temp. Since these sensors measure 2 distinct thermal levels, there is a constant temperature difference between them, which is Tcase to Junction Delta. C2Q`s have 1 Tcase and 4 Junction sensors, while C2D`s have 1 Tcase and 2 Junction sensors.

Comp

 

[amd_fanboi]

oh... well, thanks for clearing that up; i've never read your guide so i was completely unaware 😛.