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Package temperature may intermittently deviate +/- a few degrees from the hottest Core due to a slight difference in sample timing. In some utilities, "Package" temperature is synonymous with "CPU" temperature, where both correspond to the same sensor and display the same temperature. Package temperature is typically the hottest Core. Here’s a list of variables that affect Core temperature:įor more information see Section 14 - Improving Temperatures.
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For example, Intel Extreme Tuning Utility software (XTU) and the Product Specifications website both have inconsistencies with the Datasheets, which use proper terminology.įor monitoring Core Temperature, a simple and accurate utility that's frequently updated is Core Temp. Surprisingly, there are numerous instances where Intel contradicts their own terms. Unfortunately, this blurs the distinctions between CPU temperature and Core temperature. Note : The term “CPU” temperature is commonly misused as a general term for any processor temperatures.
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Regardless of the method used, CPU temperature in BIOS is higher than in Windows at " minimum" idle, because BIOS boots the processor without power saving features and at a higher Core voltage to ensure that it will initialize under any conditions.
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Optimum macs fan control settings driver#
The monitoring utility provided by the motherboard manufacturer on your Driver DVD displays “CPU” temperature in Windows, but is actually the "hottest Core". Nonetheless, this is the temperature shown in BIOS, and on some recent motherboards is shown on the two digit "debug" display. Present Method: Core i Sockets 115x, 1200 and Extreme / X-Series Socket 20xx processors do not have an Analog Thermal Diode, but instead " substitute" the "hottest Core" for "CPU" temperature, which is a contradiction in terms that can be confusing. ”CPU” temperature is typically inaccurate and can vary greatly with BIOS updates. The monitoring utility provided by the motherboard manufacturer on your Driver CD displays “CPU” temperature in Windows. The Analog value is converted to Digital (A to D) by the motherboard's Super I/O (Input / Output) chip, then is calibrated to look-up tables coded into BIOS. Previous Method: Core 2 Socket 775 and Core i 1st Generation Socket 1366 processors have a single Analog Thermal Diode below the Cores to " substitute" for a thermocouple sensor. CPU temperature is instead a single measurement centered on the external surface of the CPUs "Case" or "IHS" ( Integrated Heat Spreader) where the cooler is seated. Core temperatures are measured at the heat sources near the transistor "Junctions" deep inside each Core where temperatures are highest. Intel Desktop processors have temperatures for each "Core" and a temperature for the entire "CPU".