Most of the additional features in Ultimate are for IT Professionals. There are only a few extra features in Ultimate that are useful for consumers. Used for compatibility with older programs. Windows XP Mode – Allows you to run Windows XP SP3 inside Windows 7.Ability to join a Windows domain – Home Premium cannot join Windows domains.Offline Files and Folder Redirection – Again, more a feature of a Windows machine joined to a domain.Group Policy – Allows you to control just about all aspects of the Windows operating system locally or via Windows Server 2003/2008.

control volume, display different wallpaper, prevent screensaver from appearing, etc.

Presentation Mode – Lets you change the behavior of Windows while giving presentations, i.e.

Not as secure as BitLocker, which is only available in Ultimate.

Encrypting File System – Allows for filesystem-level encryption.

This allows software implementation of RAID, which could be useful for a system with multiple hard drives. In addition to the points mentioned above, Professional also has the following features and services:

Home Premium and above all support HomeGroups.

With Professional and Ultimate you can use Windows as a host for remote desktop and connect to other machines.

Home Premium can only be a client for Remote Desktop (can only be connected to from another machine).Professional and Ultimate can backup to the network. Home Premium cannot backup to a network location (only local backups).Professional and higher can support a max of 2 CPUs. Home Premium can only support up to 1 CPU.For Professional and Ultimate it’s 192 GB (64-bit Windows) Oddly, Windows 7 Ultimate is only supported until January 2015 also. By contrast, Windows 7 Professional is supported until January 2020. For starters, Windows 7 Home Premium is only supported until January 2015.Here are the various points about Home Premium: Let’s start off with Home Premium first since that forms the base of all other versions. I’ll try to give a more complete listing of what features are missing or added to each version.

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