The RDNA architecture is a graphics architecture developed by AMD for its Radeon series of graphics cards. It focuses on improving performance and efficiency, enabling better gaming experiences and higher frame rates. RDNA introduces features like a new compute unit design and improved cache hierarchy, which enhance rendering capabilities. Additionally, RDNA supports advanced technologies such as Ray Tracing and Variable Rate Shading, allowing for more realistic lighting and shading effects in games. This architecture is a significant step forward from its predecessor, GCN, providing gamers with enhanced visual fidelity and power efficiency in modern applications.