Precision Boost is a technology developed by AMD that automatically adjusts the clock speed of a processor based on its workload. This means that when a computer is running demanding applications, the processor can increase its speed to improve performance, and when the workload is lighter, it can reduce its speed to save energy. This feature helps optimize the performance of AMD Ryzen processors by providing a balance between power consumption and processing power. By dynamically adjusting the clock speed, Precision Boost ensures that users get the best possible performance without unnecessary energy use.