MIPS64 is a 64-bit instruction set architecture (ISA) developed by MIPS Computer Systems. It is an extension of the original MIPS architecture, designed to improve performance and support larger amounts of memory. MIPS64 is commonly used in high-performance computing, embedded systems, and networking equipment. The architecture supports various data types and provides features like advanced floating-point operations and enhanced security. It is known for its simplicity and efficiency, making it a popular choice for developers. Many modern processors, including those used in game consoles and routers, utilize MIPS64 for its robust capabilities.