CPUs have different sockets to accommodate advancements in technology and ensure compatibility between the processors and motherboards. As CPU technology evolves, new processors may require different socket designs to support their enhanced features and capabilities. Each pin on a CPU is wired to communicate with a specific part of the system. Changes in pin design and count can impact the functionality and performance of the CPU. An old pin design might not support new features, necessitating a change in the socket design between generations. Different CPU manufacturers, like AMD and Intel, have their own proprietary technologies and architectures. This results in unique socket types for each brand, as they are not interchangeable.