Everest Reporting Incorrect CPU Temps?

[RadioActiveLobster]

If you look at the screenshot below, Everest is reporting temperatures 10 degree's Celsius below what CPUID HWMonitor, Core Temp, and Real Temp are reporting


These are all idle temps

http://img408.imageshack.us/img408/277/tempsd.png

Anyone know why it is doing this? I like to use Everest to display this info on my G19's LCD screen but if the temps are wrong it kinda defeats the purpose.

 

[RadioActiveLobster]

Anyone?

 

[Markdek]

Did you try Everest Help?

22. The temperature, voltage or fan rotation values on the Computer / Sensor page are inaccurate. For example, a bogus "Aux" temperature is displayed with a nonsense value; or the CPU and motherboard temperatures are reversed; or the -5V or -12V lines display a completely off positive value. How to make the sensor values more accurate?

Unfortunately there is no standard for sensor chip registers layout, hence in several cases the registers layout that EVEREST uses could fail to be accurate. In such cases please contact us through the Lavalys Discussion Forum, under the "Hardware Monitoring" forum. When you open the new topic, please make sure to indicate the version number of EVEREST you're using, the model of your motherboard; and also copy-paste the full content of the Computer / Sensor page into the new topic you open.


You can set the TJmax in Everest, and a couple other items.......that may help.

.

 

[evilsofa]

To quote this thread:

Tj max stands for Tjunction Max, Tjunction is another word for core temps. All Intel Core processors have a Tj max with values that vary greatly, notebook processor Tj max values are known as they are provided from Intel. Desktop processors on the other hand are not documented and we can do nothing but guess.

Tj max is the maximum allowable temp for a processor's internal cores, if you reach Tj max the processor's THERMTRIP# signal will activate shutdown to prevent damage to the processor.

Correct. The TJ register is a countdown value. When it hits zero, the CPU will shutdown. However, Intel does not provide what the zero value's actual temperature for desktop parts. This TJ Max value varies between processors and steppings. Most application only assume the TJ Max temperature and therefore are not accurate.

Note the part I emphasized in bold text. You can buy two of the same processors from newegg and they could have different TJMax values - and the temperature measuring applications have no way of determining TJMax.

If you check any CPU cooling review at HardOCP (like this recent one), you'll see they check CPU temps by drilling a small path into the CPU and inserting their own thermocouple, because there is no other way to be certain.

 

[RadioActiveLobster]

Forgive me for not understanding, but what the TJMax temp is (as far as I see it) is irrelevant to my problem.

My Problem is that Everest is showing temps 10 degrees cooler than 3 other monitoring programs. How is that related to the TJMax? If they are all pulling information from the same sensors why are they not showing the same information?

 

[evilsofa]

It is precisely relevant, because the data the monitoring programs get from the sensors includes TJMax - a value which is adjusted differently for each processor and even for different steppings of the same processor. To be clear: the temperature data that Intel provides from the CPU is not the actual temperature of the CPU. Intel refuses to release TJMax values, which means the monitoring programs have to guess what TJMax is. In your case, Everest is guessing differently than the other three. There are three possibilities: that Everest is correct; that the other three are correct; that none of them are correct.

 

[RadioActiveLobster]

Ok, that makes sense.

Thanks for explaining that.