Lutfij :
Can you list you full system's specs inclusive of your OS? You may also want to correlate your findings with HWMonitor. I'd suggest that you have one app running and not Core temp+HWMonitor.
i7 6700K (Cryorig H7 cooler, not ideal for OCing but im getting water soon)
GTX 1080 (Asus OC edition)
Asus Maximus VIII Hero
1TB HDD, 250GB SSD, some DVD burner that I can't remember the exact name of
EVGA Supernova 750W P2
Windows 10 Home
If you need anything else let me know. I'll switch to HWMonitor as well.
Update: Checked HWMonitor and although the voltage isn't quite as high as CoreTemp was reporting it is still higher than I have set (~1.25V instead of ~1.3). That's at least what it says in the CPU Vcore..there's another VID setting that seems related to the processor saying the voltage is above 1.3V, so I'm not sure which to look at.