64-bit architecture refers to a computer system design that uses 64 bits to represent data and memory addresses. This allows for a significantly larger amount of memory to be accessed compared to 32-bit systems, which can only address up to 4 GB of RAM. With 64-bit architecture, systems can theoretically support up to 16 exabytes of RAM, enabling better performance for applications that require large amounts of memory, such as video editing software and 3D rendering programs. In addition to increased memory capacity, 64-bit architecture can enhance processing power. It allows for more data to be processed simultaneously, improving the efficiency of tasks. Many modern operating systems, like Windows and Linux, and applications are designed to take advantage of 64-bit architecture, providing users with faster and more capable computing experiences.