My motherboard doesn't have probelt but.....
It's not necessary to go to extreme for voltage monitoring, I personally use Hwinfo for clock speed, temp, and voltage monitoring.
It's accurate for monitoring most everything in your pc and it's free too. If you'd like to try it, under "Installer" click Free Download in green.
Here is an example, the Vcore is the cpu voltage.
Click the pic to make it bigger and again to make it clearer.