Cool'n'Quiet is a power-saving technology developed by AMD for its processors. It dynamically adjusts the CPU's voltage and frequency based on the workload, reducing power consumption and heat generation when the system is idle or under light use. This helps improve energy efficiency and prolongs battery life in laptops. When the demand increases, Cool'n'Quiet allows the CPU to ramp up its performance by increasing the frequency and voltage. This ensures that users experience optimal performance during demanding tasks while maintaining a balance between power efficiency and processing capability.