Gentoo Archives: gentoo-user

From: meino.cramer@×××.de
To: Gentoo <gentoo-user@l.g.o>
Subject: [gentoo-user] How to correctly read CPU temperature ?
Date: Sat, 11 Sep 2010 05:16:32
Message-Id: 20100911051516.GA5559@solfire
1 Hi,
2
3 with the command "sensors" (lm_sensor) I can read out the
4 temperatures/voltages of my mobo/cpu:
5
6 atk0110-acpi-0
7 Adapter: ACPI interface
8 Vcore Voltage: +1.35 V (min = +0.80 V, max = +1.60 V)
9 CPU/NB Voltage: +1.16 V (min = +0.80 V, max = +1.60 V)
10 CPU VDDA Voltage: +2.50 V (min = +2.00 V, max = +3.00 V)
11 DRAM Voltage: +1.51 V (min = +1.40 V, max = +1.90 V)
12 HT Voltage: +1.20 V (min = +0.80 V, max = +1.50 V)
13 NB Voltage: +1.10 V (min = +0.90 V, max = +1.35 V)
14 SB Voltage: +1.11 V (min = +0.80 V, max = +1.50 V)
15 +3.3V Voltage: +3.34 V (min = +2.97 V, max = +3.63 V)
16 +5V Voltage: +4.97 V (min = +4.50 V, max = +5.50 V)
17 +12V Voltage: +12.21 V (min = +10.20 V, max = +13.80 V)
18 CPU Temperature: +35.0 C (high = +40.0 C, crit = +90.0 C)
19 MB Temperature: +31.0 C (high = +35.0 C, crit = +95.0 C)
20 NB Temperature: +46.0 C (high = +65.0 C, crit = +95.0 C)
21 SB Temperature: +40.0 C (high = +35.0 C, crit = +75.0 C)
22 OPT_TEMP1 Temperature: +0.0 C (high = +0.0 C, crit = +90.0 C)
23 OPT_TEMP2 Temperature: +0.0 C (high = +0.0 C, crit = +90.0 C)
24 OPT_TEMP3 Temperature: +0.0 C (high = +0.0 C, crit = +90.0 C)
25
26 But there is something I worry about: The CPU temperature.
27
28 On the Inet I found some, but not very clear infos, which say, that
29 the temperature sensing diodes of the AMD Phenom II x6 T1090 were
30 wrong. Second thing is, when idleing the CPU of my box has only 34
31 degree C -- which would be nice if true, but I dont believe that:
32 The CPU is cooled with a Scythe Mulgen 2 Rev.B or with other words
33 its only a fan and therefore only air cooling...
34
35 When booted into the BIOS the "hardware info" shows a higher
36 temperature for the CPU while idleing than the above shown command
37 output. But: From where the BIOS takes its informations?
38 Are there any "formula" to convert the raw value into the real world
39 value? And from where I can take that formula?
40
41 Thank you very much in advance for any help!
42 Best regards
43 mcc
44
45 PS: Mobo is a "ASUS Crosshair IV Formula". I am neither a hard
46 overclocker nor a gamer (no punt intended! :)

Replies

Subject Author
Re: [gentoo-user] How to correctly read CPU temperature ? Volker Armin Hemmann <volkerarmin@××××××××××.com>
Re: [gentoo-user] How to correctly read CPU temperature ? Paul Hartman <paul.hartman+gentoo@×××××.com>