On Wed, 2010-08-04 at 18:22 +0300, Nikos Chantziaras wrote: > On 08/04/2010 02:14 PM, Xi Shen wrote: > > hi, > > > > after i setup lm_sensors on my gentoo amd64, i ran sensors, and got > > the below output > > > > coretemp-isa-0000 > > Adapter: ISA adapter > > Core 0: +61.0 C (high = +74.0 C, crit = +100.0 C) > > > > coretemp-isa-0001 > > Adapter: ISA adapter > > Core 1: +61.0 C (high = +74.0 C, crit = +100.0 C) > > This is the sensor inside the CPU. The kernel doesn't know how to > interpret this value on non-mobile CPUs, and it's usually off by 10C to > 15C on desktop CPUs. > > > > CPU Temperature: +49.0 C (high = +90.0 C, crit = +125.0 C) > > This is the sensor on your motherboard that resides directly under the > CPU. This an accurate temp and the kernel knows exactly how to > interpret the values. > >
This is windows specific but has lots on how Intel/AMD work. http://www.alcpu.com/CoreTemp/ This page seems to imply that Linux's use of coretemp is not as "detailed" as available to windoze users and if an unknown cpu will use a default value which may be incorrect. http://www.mjmwired.net/kernel/Documentation/hwmon/coretemp The lm_sensor temperatures (and voltages) are always highly suspect, usually being based on users experiments rather than manufacturer information which is usually not available. Also, I suspect variation even between motherboards of the same type as sometimes the supposed lm_sensors values for one of my systems (often cpu voltage) are not even close. BillK
