If you don’t really use older software, XP Mode is not a needed feature. XP Mode is basically a way to allow people to run older software, that is not compatible with Windows 7. – The heavy majority of PC users will never use Windows XP Mode, this includes coders, designers, and developers. To you, does the $100 price jump justify these three features? Consider the following: The next step up from Home Premium is Windows 7 Professional, which adds three major features: XP Mode, Domain Join, and the ability to back up to a home or business network.