Windows XP Professional x64 Edition is designed to meet the demands of customers who require large amounts of memory and floating point performance in areas such as mechanical design and analysis, 3-D animation, video editing and composition, and scientific and high-performance computing applications.

Performance benefits for specialized, technical applications
The performance of 64-bit computing offers advantages in fields such as automobile or airplane design, by allowing engineers to create larger, more complex models. With such systems, engineers can use simulation software to analyze the effects of airflow, stress, and heat on materials of a car or plane, and then study the results to improve product design. Likewise, 64-bit computing is a benefit for digital content creators, including 3-D animators, digital artists, and game developers who can significantly reduce the time spent to digitally render three-dimensional models. In the areas of scientific and high performance computing, Windows XP Professional x64 Edition will aid in oil and gas exploration, seismic analysis, computational fluid dynamics and scientific visualization, among other applications.

Please note that purchasers of OEM Software must fall into one of the categories listed below:

Refurbishing
Hardware on an existing PC is being upgraded, which must include basic operational components such as memory or motherboard, therefore the OS software can be upgraded also using OEM software.

Building
A PC is being constructed from scratch.

Pre-Installing
If the machine is to be resold, whether it is new or second hand, OEM software can be added prior to sale, but the operating system cannot be changed

Selling-On
OEM software can be bought by a reseller with the specific intention of selling on to another Reseller, providing that the sale is accompanied by a hardware sale, such as a hard disk.