This is most likely due to an odd name of the mainboard, so HWiNFO cannot properly adjust the sensor values. Do you have an idea why it's called "Mac-AF896" ?
A HWiNFO Debug File would be helpful to check this in more detail.
VID is the voltage requested by the CPU, but not necessary what it really gets.
Vcore is the voltage sensed, but it might be affected by certain factors, hence be inaccurate.
The VR VOUT is the voltage supplied to the CPU measured by the VRM, so should be the most accurate one.