Thus you have no choice but to rely on the outputs of temperature monitoring diodes embedded in some chips in your system by chip manufacturers.

Given that these software programs such as speccy and speedfan and others read the output of the same thing (in many cases the winbond chip), how can they more or less reliable ? Surely they are just reading the same information ?Įven (independently) determining the temperatures of components in any system is not trivial, because you have to make good thermal contact between in question, and even then you are not accessing in most cases the die temperature. In many systems (certainly my Compaq Presario S5160UK) this chip is a winbond chip soldered onto, and an integral part of, the motherboard. I had believed that every way of determining system 'temperatures' in software worked by reading the lower level software outputs of chips which actually measured the voltages of of certain diodes on the CPU, GPU, HDD and others, and performed the ADC function on them. I have been reading a few posts where users have written that speccy gives more reliable measurements of 'temperature' than speedfan.

Speedfan vs speccy 2015