The Cortex-A78 is a high-performance processor core designed by ARM Holdings. It is part of the ARM Cortex family and is optimized for mobile devices, offering improved efficiency and speed compared to its predecessor, the Cortex-A77. The Cortex-A78 supports advanced features like big.LITTLE architecture, allowing it to balance performance and power consumption effectively. This processor is built on a 5nm manufacturing process, which enhances its performance while reducing energy usage. The Cortex-A78 is commonly used in smartphones and tablets, enabling faster app performance and better multitasking capabilities, making it suitable for demanding applications and gaming experiences.