Features:

 - Windows XP Professional is built on the proven code base of Windows NT® and Windows 2000, which features a 32-bit computing architecture and a fully protected memory model.
 - Building on the device driver verifier found in Windows 2000, the Windows XP Professional will provide even greater stress tests for device drivers.
 - Eliminates most scenarios that force end users to reboot in Windows NT 4.0 and Windows 95/98/Me. Also, many software installations will not require reboots.

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.