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Why Windows XP Professional over Windows XP Home Edition? These are the features of XP Professional which are unavailable in the Home Edition.
 
Windows XP Professional Features Advantages:
 
Remote Desktop
Remotely access your Windows XP Professional PC, from another Windows PC, so you can work with all of your data and applications while away from your office.
 
Offline Files and Folders
Access to files & folders on a network share when disconnected from the server.
 
Scalable processor support
Up to two-way multi-processor support.
 
Encrypting File System
Protects sensitive data in files that are stored on disk using the NTFS file system.
 
Access Control
Restrict access to selected files, applications, and other resources.
 
Centralized Administration
Join Windows XP Professional systems to a Windows Server domain to take advantage of the full range of powerful management and security tools.
 
Group Policy
Simplifies the administration of groups of users or computers.
 
Software Installation and Maintenance
Automatically install, configure, repair, or remove software applications.
 
Roaming User Profiles
Access to all your documents and settings no matter where you log on.
 
Remote Installation Service (RIS)
Support for remote operating system installations where desktops can be installed across the network.
 
Multi-lingual User Interface (MUI) add-on
Change the user interface language to get localized dialog boxes, menus, help files, dictionaries, and proofing tools etc.
 
These are the reasons why XP Pro is used mostly in office environments. The Home Edition is much easier on your computer, i.e., it will not use up a lot of memory. The system would be relatively faster while using the Home Edition.