potistiri,
It's all explained in this Tom's Sticky:
Intel Temperature Guide -
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
"
Section 1 - Introduction
Intel desktop processors have thermal sensors for each Core, plus a sensor for the entire processor, so a Quad Core has five sensors. Heat originates within the Cores where Digital sensors measure Core temperatures. A single Analog sensor under the Cores measures overall CPU temperature.
Core temperature is 5C higher than CPU temperature due to sensor location. Intel's Thermal Specification is "Tcase", which is CPU temperature,
not Core Temperature. Tcase for the popular i5 4690K is 72C. Tcase + 5 makes the corresponding Core temperature 77C.
The relationship between Core temperature and CPU temperature is not in the Thermal Specifications; it's only found in a few engineering documents. In order to get a clear perspective of processor temperatures, it's important to understand the terminology and specifications, ... "
"
Section 3 - CPU Temperature
Also called "Tcase", this is the temperature shown in Intel's Thermal Specification - http://ark.intel.com/ It's measured on the surface of the Integrated Heat Spreader (IHS) under tightly controlled laboratory conditions at 22C Standard Ambient. For lab testing
only, a groove is cut into the surface of the IHS where a "thermocouple" which measures temperatures, is embedded at the center. The stock cooler is seated and a steady-state 100% workload is applied. Peak temperature is reached within 10 minutes.
Since there's no thermocouple on any processors outside Intel's labs, a single Analog Thermal Diode located in the center under the Cores is used to substitute for a thermocouple. This sensor measures "CPU" temperature, which is the overall temperature of the entire processor. The Analog value is converted to Digital (A to D) by the Super I/O (Input / Output) chip on the motherboard, then is calibrated to look-up tables coded into BIOS for each socket-compatible processor.
CPU temperature in BIOS is higher than in Windows at idle, because BIOS starts the processor at boot voltage to ensure that it can initialize under any conditions. The monitoring utilities provided by motherboard manufacturers on your Driver DVD reads CPU temperature. Thermal code can vary greatly between BIOS suppliers and version updates, and can be wrong by up to 30C.
BIOS or CPU temperature may not be accurate. ... "
"
Section 5 - Core Temperature
Also called "Tjunction", this is the temperature measured directly on the hot spots within each Core by individual Digital Thermal Sensors (DTS). Although Core temperature sensors are factory calibrated by Intel, deviations between the highest and lowest Cores may be 10C. Sensors are designed to be more accurate at high temperatures to protect against thermal damage, so
idle temperatures may not be accurate.
Since the CPU sensor is located under the Cores, and not near the hot spots, there's a 5C thermal gradient or "offset" between Core temperature and CPU temperature. This is shown on Figure 5 in the following Intel document -
http://arxiv.org/ftp/arxiv/papers/0709/0709.1861.pdf
At Default / Auto BIOS settings (stock clock and Vcore) with 100% workload on the stock cooler, Core temperature is 5C higher than the Tcase specification -http://ark.intel.com/ This means that whatever the Tcase specification is for your processor, add 5C to get the corresponding value for Core temperature.
Core temperature is the standard for thermal measurement because it's consistently more accurate than CPU temperature.
Core temperatures respond instantly to changes in load. ... "
potistiri,
The Tcase value for your i5 760 -
http://ark.intel.com/products/48496/Intel-Core-i5-760-Processor-8M-Cache-2_80-GHz - is the same as the new i5 4690K shown above in the Introduction Section of the Guide.
CT
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