Core voltage of a computer system, sometimes raised for overclocking (can get too hot) or lowered for cooling (can cause system to receive insufficient power). The vcore is the base voltage value to which the voltage of the separate connections are added: 3.3V, 5V or 12V. All these things together provide the system's power.
Don't set your vcore too low, the system might not even boot up.
by Fluid September 10, 2004