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I5 3570k low temps. Idle and load

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June 30, 2012 9:34:01 AM

Hi,
I've just completed my first build (With help from friends)
After downloading all my usual temp applications (Real Temps, CPU Hardware Monitor, Core Temps) I noticed that my temps are very low, with the core temps of;

Please note that these temps are similar across all 3 of my temps applications.

IDLE:
Core 0# Min: 13. Max: 17
Core 1# Min: 8 . Max: 21
Core 2# Min: 22. Max: 26
Core 3# Min: 18. Max: 22

After reading some threads of the temps of an i5 3570k, lots of people seem to have the complete opposite of me, I've seen them report idle temps of 50 -+ degrees.

After reading some more, I've noticed everyone says " Idle temps doesn't matter, only load temps do ", Or something along those lines.

So, after running nearly 15minutes of prime95, my temps looked like this;

100% Load:
Core 0# Min: 35. Max: 43
Core 1# Min: 32. Max: 41
Core 2# Min: 40. Max: 46
Core 3# Min: 38. Max: 45

Again, all 3 temp programs showing similar results.

Another note, the temperature in my area (Manchester, England) at the time was 18 degrees C max.

Another note - I have not yet overclocked (everything is stock)

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So my question is, are these temps not too low? and should I worry about low temps?
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Spec:
CPU: i5 3570k
Case: CM HAF X
CPU Cooler: CM Hyper 212 evo (Push only)
Mobo: MSI Z77a-GD55
June 30, 2012 10:08:39 AM

Have you overclocked? People are getting high temps only when overclocking their Ivy Bridge CPUs.
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June 30, 2012 10:24:11 AM

Nope, its not overclocked. And i've seen threads of 3570k'a hitting 50 oC at idle.
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June 30, 2012 10:33:22 AM

Are you using and power saving features? and what temp is your ambient or room temp :) 

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a c 283 à CPUs
June 30, 2012 10:41:52 AM

It's basically a guarantee that the sensors are wrong. You'll never have temps below your ambient room temp on air cooling. Assuming your room temp is 18C even, you have 2 cores below that at idle, which is physically impossible on air cooling (even with the best of the best, like a Noctua NH-D14 or Thermalright Silver Arrow).

I would add around a 10-15C offset to the temps. That would give you much more realistic readings.
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June 30, 2012 10:57:08 AM

Another thing to bear in mind is that, the CPU downclocks when not in use. Currently running at 1.6, but as soon as it comes under any sort of load, it shoots back up to its standard core clock (3.6). This could possibly be the cause of low temperatures
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a c 283 à CPUs
June 30, 2012 10:59:42 AM

ohara59 said:
Another thing to bear in mind is that, the CPU downclocks when not in use. Currently running at 1.6, but as soon as it comes under any sort of load, it shoots back up to its standard core clock (3.6). This could possibly be the cause of low temperatures


Yes, but it would still NEVER be below ambient on air cooling (impossible). 25-30C at idle (1.6) is about what I would expect with a low ambient temp and with a 212 Evo. If it's lower than that, you need to be wearing a jacket inside because that would mean you have a really cool room temp.
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a c 103 à CPUs
June 30, 2012 11:45:08 AM

Agree with DJDeCiBeL, sensors are off, at 10c, probably more likely idling at 30+c.
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a b à CPUs
June 30, 2012 5:29:29 PM

There something wrong for sure ivy bridge runs hot even on mild overclocks so when you ran prime95 with the 212 evo which is a budget bare minimal oc heatsink your temps should be way higher than that i would think anyway but bottom line...i agree with DJDeCiBeL that is most likely the cause.
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a b à CPUs
June 30, 2012 5:33:20 PM

I have selfbuild watercooling here - which make my computer stationary when put

on - i have right now 26 degrees inside in my livingroom and idle i can manage 28

on my 2600K with no powersavings running and overclocked to 4.0 Ghz - which is

not much OC but fine with me.
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!