Uhh so which cpu temperature is correct

[kinitex]

Speedfan, MBM, PC Probe II all say 34c idle
Core Temp 0.9.5 says 43c

which one is right?

[GTengineer]

coretemp 0.95

you could also try TAT and see, I bet it will give you something similar to coretemp

[ps2cho]

What motherboard and processor are you using?

Load up everest and see what that recognizes it at. I believe Everest uses the same diode readings as CoreTemp.

[kinitex]

Asus P5k
Q6600 @ 9x 333 = 3.0ghz w/ 1.375v

Ok everest is showing each core at around 43c aswell and has just a cpu sensor at 34c. I guess thats the sensor the other monitors use which is incorrect?

[Peepaw]

Coretemp works for me and is within a degree or two of Tat.

[orion456]

Speedfan, MBM, PC Probe II all say 34c idle
Core Temp 0.9.5 says 43c

which one is right?

They are all perfectly right! :-/ Who would have guessed huh?

It's just that they are measuring different things. Speefan, MBM and PC Probe are reading the temperature at the CPU surface very close to to the heat sink. Core Temp and TAT are measuring the temperature inside the actual cores a short, but significant distance from the CPU surface.

Often TAT reports different temperatures for each core. Sometimes those differences seem pretty large. But what you are seeing is different core loadings at any instant in time, component variability inside the chip, as well as the uncertainty of actually making accurate measurments with real world electronic devices. PLus or minus 20% is often as close as you can get.

Maximum TAT is about 100c, and MBM is 63.5c (varies with each chip); which ever comes first, you then have reached your limit. So far you are a long way from those temperatures. :clap:

If you want speed fan to shown TAT temperatures then just open the SpeedFan configuration/advanced tab and find the temperature offset for the CPU and add about 15c. Then speedfan will show about what TAT shows. The actual number to add depends on your system but its pretty easy to see that the difference between TAT and SpeedFan is about constant.

It is becoming confusing around here with 1/2 reporting TAT temps and the other 1/2 reporting SpeedFan and still another 1/2 reporting some other temps that make no sense at all.....

[kinitex]

Excellent info. So what's the max idle/load temps you want to be running on a Q6600 stable 24/7.

[orion456]

Excellent info. So what's the max idle/load temps you want to be running on a Q6600 stable 24/7.

SpeedFan = 63.5c is the maximum CPU surface temperature recommended for a Q6600, so I would stay absolutely below 60c to give some margin for error. I think that will keep TAT below its maximum of 100c.