The Adreno 420 is a mobile graphics processing unit (GPU) developed by Qualcomm. It is designed to enhance the visual performance of smartphones and tablets, providing improved graphics rendering for games and applications. The Adreno 420 supports advanced features like high-resolution displays and enhanced 3D graphics, making it suitable for demanding mobile gaming experiences. This GPU is part of the Snapdragon 805 system-on-chip, which combines processing power with efficient energy consumption. The Adreno 420 also supports various graphics APIs, such as OpenGL ES and DirectX, allowing developers to create visually rich applications that run smoothly on compatible devices.