"CPU Vcore
This is the voltage supplied to the CPU core. Unless you are overclocking you should leave this at the default setting. However, if you are overclocking then you might need to give the CPU a little more power to be able to keep up with clock frequency. By increasing the Vcore you are providing the CPU with stronger clock tick signal.
"The flip-side however is that your CPU will run hotter, so you need to make sure that you have adequate cooling in place (usually it's not the Vcore setting that damages a CPU, but the extra heat that this generates)."
