I used to write and maintain the
Core i and Core 2 Temperature Guide here at Tom's from `06 thru `10. We went through this several years ago when the Q6600 was the processor of choice, and Intel wasn't yet forthcoming about Tjunction Max values.
You have the original
B3 105 Watt version of the Q6600 which idles at 24 Watts, and was thought to have a Tjunction Max value of 85c. The later
G0 95 Watt version idles at 16 Watts and has a Tjunction Max value of 100c, thus a 15c dicrepancy still exists between some temperature monitoring utilities. The Author of
Real Temp sorted out the contoversy and coded this most popular and trusted temperature monitoring utility to the correct Tjunction Max values.
From the Introduction of my Guide:
"Core i and Core 2 processors have 2 different types of temperature sensors; a CPU case (not computer case) Thermal Diode centered under the Cores, and Digital Thermal Sensors (DTS) located on each Core. The case Thermal Diode measures Tcase (Temperature case), which is overall CPU temperature, and the Digital Thermal Sensors measure Tjunction (Temperature junction), which are individual Core temperatures. Since these sensors measure 2 distinct thermal levels, there is a 5c temperature difference between them, which is Tcase to Tjunction Gradient. Core i and Core 2 processors have 1 Tcase sensor, and an individual Tjunction sensor on each Core. Uncalibrated default temperatures are seldom accurate.
Intel provides complete specifications for Tcase (CPU temperature), but only partial specifications for Tjunction (Core temperature), which causes much confusion and debate in the overclocking community concerning test methods, temperature monitoring utilities and accuracy. The monitoring utilities provided by motherboard manufacturers monitor CPU temperature, while some popular freeware utilities monitor Core temperatures. The most accurate Core temperature monitoring utility available is Real Temp - http://www.techpowerup.com/realtemp/ - which has many unique and innovative features that include calibrations, and is recommended for users interested in monitoring Core temperatures."
Please download and run the following:
Real Temp 3.7 - http://www.techpowerup.com/realtemp/
CPU-Z 1.62-
http://www.cpuid.com/softwares/cpu-z.html
Prime95 27.7 - http://mersenne.org/
Run Prime95 on Small FFT's for 10 minutes. Intel's Thermal Specifications are complicated, but the simplified explanation is as this; Tcase Max, which is the value shown on Intel's Processor Spec Finder -
http://ark.intel.com/products/29765/Intel-Core2-Quad-Processor-Q6600-8M-Cache-2_40-GHz-1066-MHz-FSB - is CPU temperature, NOT Core temperature. This is a very common misconception among most enthusiasts.
Idle temperatures are much less important than load temperatures, however, although you're running at stock clock with Intel's very poor stock cooler, your idle temperatures will be unusually elevated because your Q6600 B3 idles at 24 Watts. Nevertheless, when running Prime95 Small FFT's, which is a steady-sate 100% workload, Tcase Max or CPU temperature is the "do not exceed" value ... but since Core temperatures are 5c higher than CPU temperature, the maximum Core temperatures for your Q6600 B3 is
67c, while the Q6600 G0 version is 76c. Aslo, keep in mind that Intel conducts all thermal testing at 22c (72F) which is Standard Ambient temperature.
Hope this helps,
Comp