Call of Duty Ghosts system requirements released by nVidia

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
RAM: 6 GB RAM
HDD: 50 GB HD space
Video: NVIDIA GeForce GTX 550 Ti / ATI Radeon HD 5870 or better
Sound: DirectX Compatible Sound Card
DirectX: 11
Internet: Broadband connection and service required for Multiplayer Connectivity. Internet connection required for activation.

Recommended System Requirements

Video: NVIDIA GeForce GTX 780

Source: http://www.geforce.com/games-applications/pc-games/call-of-duty-ghosts/system-requirements