This is not a problem with lm-sensors, but an attempt to understand what can cause the values it outputs. When I start four mprime processes in "torture test" mode on a Q6600 system it shows a flat 100% CPU usage line and `sensors` report temperatures around or below 70 degrees Celsius for each core, which is consistent with Intel's specs for a fully loaded CPU: oscar at qcore:~/Archivo/prime$ sensors coretemp-isa-0000 Adapter: ISA adapter Core 0: +73.0?C (crit = +100.0?C) coretemp-isa-0001 Adapter: ISA adapter Core 1: +71.0?C (crit = +100.0?C) coretemp-isa-0002 Adapter: ISA adapter Core 2: +62.0?C (crit = +100.0?C) coretemp-isa-0003 Adapter: ISA adapter Core 3: +58.0?C (crit = +100.0?C) However, when compiling an application with "make -j 4" the CPU usage is around 95% (which is expected as there is quite a bit of I/O involved) but the temperature goes up to 88 degrees on some cores! This is a typical output of `sensors` on this scenario: coretemp-isa-0000 Adapter: ISA adapter Core 0: +85.0?C (crit = +100.0?C) coretemp-isa-0001 Adapter: ISA adapter Core 1: +82.0?C (crit = +100.0?C) coretemp-isa-0002 Adapter: ISA adapter Core 2: +71.0?C (crit = +100.0?C) coretemp-isa-0003 Adapter: ISA adapter Core 3: +65.0?C (crit = +100.0?C) What can cause this difference on temperatures, when mprime stresses the CPU much more than the compiler? -- Oscar
