The Intel® IA-64 Architecture was designed to overcome the performance limitations of today's architectures and provide maximum headroom for the future. To achieve this, IA-64 offers an array of innovative features to extract greater instruction-level parallelism. Chief among them are speculation, predication, large register files, a register stack and advanced branch architecture. Another IA-64 innovation, 64-bit memory addressability, targets the growing memoryfootprint requirements of data warehousing, e-Business and other high-performance server and workstation applications. IA-64 also provides an enhanced system architecture supporting fast interrupt response and a flexible, large virtual address mode.