Intel SpeedStep is a technology developed by Intel that allows processors to adjust their voltage and frequency according to the workload. This dynamic adjustment helps improve energy efficiency, enabling laptops and mobile devices to conserve battery life while still providing the necessary performance when needed. By reducing power consumption during less demanding tasks, Intel SpeedStep helps manage heat generation, which can prolong the lifespan of the device. This feature is particularly beneficial for portable devices, allowing users to enjoy longer usage times without sacrificing performance during intensive applications.