i5 3570k core temps

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Cloud5

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Aug 9, 2014
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Hey there, I recently bought an 3570k and installed it with the stock cooler. I just noticed by using RealTemp 3.70 that the diference between the cores from the coldest one to the hottest one is about 13-16ºC. Im really confused and I don't know if this is normal. The system has good airflow ( Corsair 230T ) and it's core temps on idle are like that:

CPU Core1: 25ºC
CPU Core2: 31ºC
CPU Core3: 33ºC
CPU Core4: 39ºC

It's normal this kind of difference? Should I worry about? Thanks.
 
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The thermal sensing circuit inside CPUs are not calibrated precision instruments. To that, you have to add the fact that some cores are idle while others are under load and you can have sharp local temperature transients from that. Additionally, temperature sensors are notoriously inaccurate below about 40C.

Your room temperature is likely higher than 25C if it is summer wherever you live so 25C core temperature is physically impossible without some form of below-ambient cooling.
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Titan
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May 18, 2007
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The thermal sensing circuit inside CPUs are not calibrated precision instruments. To that, you have to add the fact that some cores are idle while others are under load and you can have sharp local temperature transients from that. Additionally, temperature sensors are notoriously inaccurate below about 40C.

Your room temperature is likely higher than 25C if it is summer wherever you live so 25C core temperature is physically impossible without some form of below-ambient cooling.
 
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Cloud5

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Aug 9, 2014
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I would ask If it's normal for the cpu ( when playing a mid-high cpu demanding game ) the following temps:

CPU Core1: 47º
CPU Core2: 53º
CPU Core3: 54º
CPU Core4: 64º

Is it normal? Should I worry about that? Thank you again.
 
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WhiteSnake91

WhiteSnake91

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Jun 16, 2013
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That's probably about average for a stock cooler on a demanding game. I got rid of mine because it sounded like a lawnmower, was very loud while gaming and annoying. Intels can stand higher temps than the AMD cpus so you're fine. I'd recommend the Hyper 212 evo cooler for better temps or noise if that's a problem for you. It's an unlocked cpu so it felt weird for me to even use the stock cooler
 
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Titan
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May 18, 2007
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BTW, if you are not using the IGP, keep in mind that one of the cores does end up with an extra on-chip heat-spreader. That would partly explain why one core (the one closest to the unused/disabled IGP) is often substantially cooler than the others.
 
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