Have a look at this one: how’s it possible that one tool says freaking hot, the other says it’s freaking cool and the last one doesn’t say anything. How is it possible to get an accurate reading from this..?
Try AMD Overdrive software. Different programs usually show different temperatures.
To make sure that nothing is getting to that temp. you can check the bios and anyway if anything was overheating your PC would shut down unexpectedly.