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.
Service Pack 1 was primarily a roll-up of previously released security and stability updates. Key additions included: Sp1 Windows 7 Prof X64
Support for Hyper-V features, allowing for better memory management in virtual environments. Sp1 Windows 7 Prof X64