When you need the raw power of 72 processors crunching 144 simultaneous threads, Sun's flagship high-end Sun Fire E25K server can take on just about any high-volume, mainframe class, mission critical computing challenge with headroom left over. The new Sun Fire E25K server extends Sun's tradition of reducing risk and enabling customers to comfortably scale capacity. As the lead member of the industry's most scalable server line, it scales up to 72 processors, executing up to 144 simultaneous compute threads, and supports up to over 1TB of memory to provide maximum headroom for data-intensive applications. The new Sun Fire E25K server delivers significant productivity gains to address ever-demanding data and business logic workloads such as business processing, databases, data warehouses, IT infrastructure, application serving, and compute-intensive scientific engineering applications. Protect your IT investments by seamlessly upgrading your existing UltraSPARC III processor-based Sun Fire 12K/15K servers and UltraSPARC IV processor-based Sun Fire E25K servers to UltraSPARC IV+ technology.