DirectX 9 graphics device with WDDM 1.0 or higher driver.
Service Pack 1 was primarily a roll-up of previously released security and stability updates. Key additions included:
Enhanced reliability when printing mixed-orientation XPS documents. System Requirements (x64) Processor: 1 GHz or faster 64-bit (x64) CPU. RAM: 2 GB minimum. Hard Disk Space: 20 GB available space. Sp1 Windows 7 Prof X64
Enables you to connect to the computer from another machine remotely.
Support for Hyper-V features, allowing for better memory management in virtual environments. DirectX 9 graphics device with WDDM 1
Automatically identifies the correct printer when moving between home and office networks.
Allows the computer to connect to a corporate or school network (Windows Server Domain). System Requirements (x64) Processor: 1 GHz or faster
Includes the ability to back up your entire system to a network location. Contents of Service Pack 1 (SP1)