: 1.0 GHz minimum; 2.6 GHz recommended for smooth video and physics.
: Specifically tuned to run classic titles like Call of Duty 4 , Bioshock , and Age of Empires III more efficiently. System Requirements : 1.0 GHz minimum
: Includes built-in support for SATA/ACHI controllers and various network/graphics drivers that were not part of the original 2001 release. : 1.0 GHz minimum
: At least 1.5 GB of free disk space for the OS, plus additional space for games. Gaming Recommendations : 1.0 GHz minimum
: Includes the final official security updates and patches from Microsoft.