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Temps + Sensors. Core Vs CPU

C

crawlgsx

[H]ard|Gawd
Joined
Aug 12, 2008
Messages
1,252
How does the motherboard effect reading temps? I know the CPU itself has multiple sensors. 1 CPU and 1 for each core. I am just getting really confused on what temps to monitor and how accurate they are.

If I go into the Bios and look at hardware monitor I get 19c CPU temp, but idle in windows I get 19c CPU, but 32c on the core temps.
 
The CPU does not have a CPU sensor. CPU temps are usually read from sensors built into the motherboard. The only accurate readings you can get from software are the core temperatures.
 
Well there are the DTS's that record each cores temperature, and then there is the Tcase sensor that reads the temperature of the CPU casing which would be a lot lower than each core.
 
There is no TCase sensor. Intel reads TCase from a thermal diode placed in a channel they mill into the heatspreaders of their test CPUs. However, there is no actual physical sensor built into the chip that measures TCase. Generally, motherboards take their "TCase" readings from sensors built into the boards themselves, which is why the readings from those sensors are usually nowhere near the actual temperatures. Like I said in my previous post, the only way to get halfway decent readings through software monitoring programs is by getting the temperatures from the core DTSes.
 
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