Providing per core voltage and frequency control

A mobile device, such as a smart phone, comprises a processor with a plurality of cores and a power control logic to control provision of a voltage/frequency to a first core of the plurality of cores independently of provision of a voltage/frequency to at least a second core of the plurality of cores. The power control logic determines whether to update the voltage/frequency of the first core based at least in part on a workload and a temperature of the processor. Responsive to the determination to update the voltage/frequency, the power control logic sends a control signal to a voltage regulator to provide the updated voltage to the first core. The voltage regulator may comprise an integrated voltage regulator, or a plurality of voltage regulators, formed on a single semiconductor die with the plurality of cores. The power control logic may adjust a first set of cores to execute at an increased voltage/frequency independently of a second set of cores so that a thermal design power (TDP) budget for the processor is maintained.