> How do you know what is the 'correct' temperature? > (And where does that formula originally come from? > Is it simply an empirical formula someone came up with?) No, they depend on resistor combinations used and are theorical values. Quoting Artur Gawryszczak: "I guess, that the formula "temp2 (@*30/43)+25, (@-25)*43/30" is correct for those Asus motherboards, which get CPU temperature from internal thermal diode (Pentium Coppermine, and above), and "temp2 @*2.0, @/2.0" is correct for Athlon/Duron boards, which use a thermistor in the socket." -- Jean Delvare http://www.ensicaen.ismra.fr/~delvare/