Perguntas frequentes sobre o suporte do Core Temp dizem o seguinte:
Why does my AMD processor's temperature always read 0C/32F?
...On CPUs starting with the Phenom architecture AMD has introduced the ACC function, it allowed the early Phenoms to achieve higher overclocks, and on the Phenom II based processors it allowed unlocking of extra cores and L3 cache.
Some motherboards include a Core unlock feature, which is based on ACC as well. In most cases disabling these features in the BIOS will bring temperature readings back.