New
#31
They differ in features only---not speed or performance.
Here is what Professional has that is not available in Home Premium:
Domain join, Remote Desktop host, location aware printing, EFS, Mobility Center, Presentation Mode, Offline Folders, Group Policy (GP) controls, advanced backup, XP Mode, support for 192 GB of RAM, and support for 2 CPU sockets.
If you don't know what that stuff is, you aren't likely to need it.
$100 will buy a good SSD.