Windows XP: Codename: Whistler
Predecessor: Windows 2000
Minimum Requirements: Pentium 233 MHz Processor 64 MB of RAM 1.5 GB of available space on the Hard Disk
•Windows 7 Codename: Vienna and Blackcomb
Predecessors: Windows Vista
Minimum Requirements: 1gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor*1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)16 GB available hard disk space (32-bit) or 20 GB (64-bit)
•Windows Server R2: Codename: Centro
Predecessor: Windows Server 2008 SP2
Minimum Requirements: 1.4 GHz x86/x64 or Itanium 2 processor.512 MB RAM (2 GB recommended)Super VGA or higher display.32 GB disk space (10 GB for Foundation Edition)DVD drive.Keyboard and pointing device.
