Performance-cores are specialized processing units designed to handle demanding tasks in computing. They are part of a larger architecture that includes efficiency cores, allowing for a balance between high performance and energy efficiency. This design is commonly found in modern processors, such as those from Intel and AMD, which aim to optimize performance for both gaming and professional applications. These cores focus on executing complex calculations and running resource-intensive applications, making them ideal for tasks like video editing, gaming, and 3D rendering. By utilizing performance-cores, systems can achieve faster processing speeds while maintaining overall system responsiveness, enhancing the user experience in various computing scenarios.