OS: Windows XP, Windows Vista, Windows 7 (all 32/64 bit) Processor: Intel Pentium Core 2 Duo E4400 @ 2.0 Ghz, AMD Athlon X2 5000+ @ 2.6 Ghz Memory: 1 GB for Windows XP and 1.5GB for Vista / Windows 7 Graphics: 512 MB, DirectX 9.0c DirectX®: 9.0c Hard Drive: 8 GB Sound: DirectX 9.0c compatible Supported Video Cards at Release Time: NVIDIA GeForce® 8600 or higher NVIDIA GeForce™ 9 Series NVIDIA GeForce™ 200 Series NVIDIA GeForce™ 400 Series NVIDIA GeForce™ 500 Series ATI® RADEON® HD 2600 or higher ATI® RADEON® HD 3000 Series ATI® RADEON® HD 4000 Series ATI® RADEON® HD 5000 Series ATI® RADEON® HD 6000 Series Laptop versions of these cards may work but are NOT supported. These chipsets are the only ones that will run this game.