64-bit computing refers to a computer architecture 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 gigabytes of RAM. With 64-bit computing, systems can theoretically access up to 16 exabytes of RAM, enabling better performance for applications that require large amounts of memory. Additionally, 64-bit processors can handle more data at once, improving the speed and efficiency of computations. Many modern operating systems, such as Windows and Linux, support 64-bit computing, allowing users to take advantage of these enhanced capabilities for gaming, video editing, and other resource-intensive tasks.