Quad Core Temperature confusing.

[JCF]

I've finished building a quad core extreme system (Qx6700) with an intel bad axe 2 board. I'm confused by the temperature reading for the processor zone...

It reads as -32C

whats the - for?

The other temps in the casee are

System Zone 1 temp 46C
System Zone 2 Temp 41C

Curious if these numbers are ok. (using an antec p180b case, antec 650 psu, stock fans, stock intel heat sink)

 

[imported_Truenofan]

its negative 32C which is negative 35F. are you runnin like, liquid nitrogen? lol, jk its probly just being weird...if theres any other sensors for your cpu that are reading above something around 25C, then go with those.

 

[swtethan]

stop bragging about your phase change already

 

[Duvie]

Use coretemp....

I think -32c is lke -25f......(-32x1.8)+32 = -25.6

 

[JCF]

coretemp is saying

Tjunction: 100C

core #0 59C
core#1 56C
core #2 57C
core #3 56C

 

[Duvie]

Those are a bit high at stock speed...may need a better cooler...

I am at like those temps at 3.2ghz and 1.4v....I load at around 65-66c for all the cores....

Try to take it up and see if you can get it to throttle...get a utility called rightmark....

I cannot get it to throttle at 1.4v set even up to 78c in coretemp.....At 1.45v set it will throttle at around 69-70c

 

[JCF]

hmm yeah i thought it was a bit high for stock. It's using the stock intel heat sink and fan. Also the stock antec fans.

not sure why it would be that high.

What do you mean by throttle? Do you mean the cpu speed or the fan. I've noticed the system keeps the cpu fan at 1000rpm. If i set the fan at 3000rpm (noisey) but it'll cool the processer down to 46C

 

[JCF]

This is interesting. I dl'd rightmark cpu util like you suggested. It is giving me different core temps than core temp beta .94

Right Mark says

cpu 0: 42C
cpu 1: 38C
cpu 2: 39C
cpu 3: 38C

Much bette temps... so which one is telling the truth? Teh cores do seem to settle at about 44C idle after a few mins.

RightMark is also saying the cpu is throttled down to 2.581.76 and now at 2.600 so its definatly throttling. I'm not sure i understand the throttling. Right mark says one of the cpu cores clock is 1600.05mhz and its throttled to 2600. (the others are similar) but is that correct for stock? Does it constantly throttle? When is it suposed to etc? Not familiar with it.

hmm

 

[Duvie]

The rightmark ones are wrong...It is too old of a version to have fully quad core support...

2581 and 2600 from stock 2667 does not mean throttling...It tends to fluctuate a bit but I haven't noticed that to be throttling....

Basically you will see the cpu half itself or if you have TM2 throttling enabled ion the bios it may actually half the multiplier....since it is 10x266 it goes to 5x266 or 1333mhz....




If you temps were as high as shown above it may ve throttling but like I said above I couldn't get it to throttle at 1.4v all the way to 78c in coretemp.....however crank up vcore and the throttle point happens sooner and sooner...

 

[JCF]

are you sure about rightmark? It says they added quad core 2 extreme support on their page and both rightmark and core temp latest versions are from nov.

So confusing Thanks for helping

 

[Duvie]

Temps cannot be right...that is just common sense....Their support may just be the fact it recognizes teh cpu and its 4 cores...

It is even lower then my gigabyte easy tune5 temps which says it has quad support....

I get load temps around mid 30's with rightmark....Not right...


the only advantage of rightmark is that it is the only reliable app I have found that will show throttling, TM1,TM2, and C1E halt states...

 

[hox]

The issue was discussed on another forum here is the quote from that forum,

"I went to Intel`s site and looked up the QX6700 CPU and on page 71 under Thermal Specifications it says,The temperature reported over PECI is always a negative value and represents a delta below the onset of thermal control circuit(TCC) activation.If I understand this,as long as you read a negative number,no thermal stepping,(voltage reduction)is taking place.It sounds like if you have a positive number, the voltage is reduced to lower the temperature.On page 73,Table 26,for a 130 W. CPU,like the QX6700,the max. temp. is 64.5c
I hope this helps.


I have a BX2 intel mb and a qx6700 too, my temp reported by the intel manager is also a negative number. A very odd way to view temps e.g. how far away you are from thermal control activation.

 

[Duvie]

NVM you are talking about something else

 

[JCF]

So you're saying the - number represents how far away it is from triggering thermal control...

That makes sense actually. The second you pass 0, and go +1, it would begin to adjust to control the temp?

Curious what your -temp is for the cpu in the bios on your bx2 board. I'm not currently overclocking it, as i just dont want to kill it yet Also what kind of cooling do you have going on for your bx2 and qx6700 setup.

Thanks for the info Hox, that clears up quite a bit.

 

[xtknight]

Rightmark may be reading from sensors on your motherboard.

Core Temp reads from an on-die digital thermal sensor (DTS). A DTS is placed on the hottest part of the die and exists on every core of your CPU. The Intel core reports a negative value, and that negative value is how far from the first thermal trigger (or Tjmax) the actual temperature is. Supposedly it is calibrated at the factory to be accurate when subtracted from Tjmax (maximum temp spec for that CPU, either 85C or 100C for some steppings of Allendale and Conroe).

 

[hox]

Originally posted by: JCF
So you're saying the - number represents how far away it is from triggering thermal control...

That makes sense actually. The second you pass 0, and go +1, it would begin to adjust to control the temp?

Curious what your -temp is for the cpu in the bios on your bx2 board. I'm not currently overclocking it, as i just dont want to kill it yet Also what kind of cooling do you have going on for your bx2 and qx6700 setup.

Thanks for the info Hox, that clears up quite a bit.

 

[hox]

Hi I am running the zalman 9700 cooling solution. I overclocked by increasing the fsb to 300, this makes my speed 3.00 ghz. Temps before and after the overclock were -45C, I am using this machine as a work station so I am only going to OC a very conservative amount. So far so good. I still havent figured out the raid, particularly the intel raid. This build was reasonable considering I got the MB for $219 as an oem from ZZF.