Microsoft XP 64-Bit Edition

Designed specifically for high demand, technical workstation users, this is Microsoft's first 64-bit operating system. XP 64-bit Edition is suited for use in creating digital special effects and animation as well as high-end engineering work.
This version of XP supports up to 16GB of RAM and 8 terabytes of virtual RAM. XP 64-Bit has multi-processor support and is also designed to work with Intel's Itanium processor which includes advanced floating point capabilities.