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Murmel

Member

Registered: 2014-11-25

Posts: 7

CPU Voltage of 11.7V Why?

Hi,
today I looked to the command "dmidecode" to visit the cpu voltage. I saw that the voltage is on 11.7V, is that an Error? And the other thing I visited, is that the cpu clock is always on 2.400MHz, but the system utilization is very low (only few % on each thread). Why is that?

This is the output of the command:
    Version: Intel(R) Core(TM) i7-3517U CPU @ 1.90GHz
    Voltage: 11.7 V
    External Clock: 100 MHz
    Max Speed: 3800 MHz
    Current Speed: 2400 MHz

I hope someone can help me.

Murmel

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,732

Website

Re: CPU Voltage of 11.7V Why?

You should be using lm-sensors for these data.  Even then, unless someone knowledgeable has verified each voltage output and mapped it to the correct motherboard sensors, you are guessing.  To look at both endpoints, vcore and frequency, try i7z-git from the AUR.  It reads the MSR values directly from the CPU.

EDIT: see:

https://code.google.com/p/i7z/source/br … tions.c#59
https://code.google.com/p/i7z/source/br … tions.c#77

Last edited by graysky (2014-12-06 18:42:40)

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Murmel

Member

Registered: 2014-11-25

Posts: 7

Re: CPU Voltage of 11.7V Why?

Here I made a screenshot of the system overview, xsensors(lmsensors), i7z: http://www.fotos-hochladen.net/uploads/ … apjz4r.png
Why the cpu is every time on 2.4GHz? Why the temperature is so high when I do nothing?

Murmel