Call of Duty: Ghosts PC Game Brand: Activision ESRB Rating: M - Mature Genre: First Person Shooter System Requirements: Minimum System Requirements: OS: Windows 7 64-Bit / Windows 8 64-Bit CPU: Intel Core 2 Duo E8200 2.66 GHZ / AMD Phenom X3 8750 2.4 GHZ or better Memory: 6 GB RAM Hard Disk Space: 40 GB Video: NVIDIA GeForce GTS 450 / ATI Radeon HD 5870 or better Sound: DirectX compatible sound card DirectX: DirectX 11 Internet: Broadband Internet connection for Steam and Online Multiplayer.