there is no such a thing as "dangerously low" only "dangerously high", low temperature is only better for the cpu
it seems that either you are living in an igloo or you cpu thermometer is forgeted up
I tried 2 programs, same temp on both.
I have really great cooling and my home is currently air conditioned like crazy.
For cooling I have:
2 120MM fans mounted at the top
GPU fan
CPU fan
PSU fan (pulls up cool air from a bottom vent and then out the back)
And a couple of open vents where fans can go if I got more.
As for the AC, well its a AC.