OS *: Windows XP (SP3) / Windows Vista (SP2) / Windows 7 Processor: 2.6 GHz dual-core Intel Pentium D or AMD Athlon 64 X2 3800+ (2.2 GHz Intel Core 2 Duo or AMD Athlon 64 X2 4400+ or higher recommended) Memory: 1 GB Windows XP / 2 GB Windows Vista, Windows 7 (2 GB / 4 GB recommended) Graphics: 256 MB DirectX 9.0c–compliant card with Shader Model 3.0 or higher (512 MB recommended) (see supported list*) DirectX®: DirectX 9.0c Hard Drive: 8 GB Sound: DirectX 9.0c–compliant sound card (5.1 sound card recommended) Peripherals Supported: Windows-compliant keyboard, mouse, optional controller (Xbox 360 Controller for Windows recommended) Internet Connection: Broadband Internet connection with 128 kbps or faster *Supported Video Cards at Time of Release: NVIDIA GeForce 6800 / 7 / 8 / 9 / 100 / 200 / GTX series ATI RADEON X1600 / HD 2000 / HD 3000 / HD 4000 / HD 5000 series Laptop versions of these cards may work but are NOT supported. These chipsets are the only ones that will run this game.