sensors-detect generates a wrong module to load in /etc/sysconfig/lm_sensors : module should be w83781d instead of w83627hf. Everything is explained in these threads : http://www.linuxquestions.org/questions/showthread.php?s=&threadid=204617&highlight=asus+p4c800+sensors http://www.linuxquestions.org/questions/showthread.php?s=&threadid=203987&highlight=asus+p4c800+sensors But there is still a problem with the w83781d that does not get any fan speed... Thank you for lm_sensors. Very helpful and efficient on many motherboards.