CPU temps readings in various utilities: CONFUSION

[videopho]

I'm a bit confused and I hope someone can chime in and help clear this for me.

Assume system is idle at the moment...
My Easytune6 says: System 33c, cpu 28c.
Numbers are actual readings from diff utilities, btw.

My CPUID HW Monitor says,
TMPIN0 30c
TMPIN1 25c
TMPIN2 28c

Intel Core 2500K
Core #0 34c
Core #1 38c
core #2 34c
Core #3 39c
Package 39c

My PC Wizard says,

Processor Temp 25c
Processor Intel Sandy Bridge Sensor DTS
Core1 37c
Core2 38c
Core3 37c
Core4 39c

Question is when people say my 2500k temp is such and such when running P95.
What temps do they REALLY refer to according to the charts above?

 

[Zap]

Question is when people say my 2500k temp is such and such when running P95.
What temps do they REALLY refer to

Eh? That's a damn good question. See, this is one reason why I don't obsess over temperatures, as long as nothing is amiss. If a temperature seems too high, I'm sure I can always find a second opinion with a different piece of software. :twisted:

It seems different with GPUs though. I think most/all GPU monitoring software will report the same thing.

 

[postmortemIA]

i would believe only temps that come with motherboard's manufacturer software.

 

[tweakboy]

This is normal. Apps show different temps because you have to know the offset of your CPU and adjust the offset -15 on each core in my case. and in yours maybe -5 offset.

If you use speedfan, you can adjust the offset and get your correct temp, OR possibly speedfan will read your temps correctly without offset. check out speedfan,, gl You can also adjust the offset in Core Temp also. gl and gb

 

[destrekor]

When OCers refer to temps under stress testing, they are referring to the temp readings of DTS-based readings.

I don't know about PC Wizard, but Real Temp and Core Temp are both CPU monitoring applications that report real-time DTS temperature displays. The DTS temperature is the actual temperature reported from within each core in the CPU package, while most motherboard software monitors report the temperature using an off-die temperature probe. For instance, the temps from my ASUS software for CPU are almost always 10º C lower than the DTS readings.

Also, stress testing with P95 and Linpack-based utilities (LinX, for instance) tend to push temperatures far higher than you'd see in any kind of system-stressing application (I haven't seen temperatures on my 2600K ever peak over 70ºC, yet LinX pushed them to mid-80s consistently.

I love Core Temp because it also gives me the VID reading, instead of the true Vcore. That was helpful for overclocking with Offset voltages, and helped to understand them.

 

[jonabuckle]

Old article But might help [uses coretemp]:

http://www.overclockers.com/measuring-cpu-dual-core-temps/

 

[bononos]

This is normal. Apps show different temps because you have to know the offset of your CPU and adjust the offset -15 on each core in my case. and in yours maybe -5 offset.
...

The offsets are only necessary in the old days of external sensors that nudge up to the backside of the chip IIRC and good reviewers would take the trouble to drill a hole in the heatsinks to plug in a sensor to get the Tcase.

 

[bononos]

When OCers refer to temps under stress testing, they are referring to the temp readings of DTS-based readings.

I don't know about PC Wizard, but Real Temp and Core Temp are both CPU monitoring applications that report real-time DTS temperature displays. The DTS temperature is the actual temperature reported from within each core in the CPU package, while most motherboard software monitors report the temperature using an off-die temperature probe. For instance, the temps from my ASUS software for CPU are almost always 10º C lower than the DTS readings.
.......

Why on earth would mb manufacturers implement a HW temperature probe function when the cpu already has an on die temp diode?