Minimum: Supported OS: Windows® XP (SP 1 required)/Vista (only) Processor: 2.0 GHz Pentium 4 or AMD Athlon Memory: 256 MB Graphics: 64 MB DirectX 9.0c-compliant supporting Shader Model 1.1(*see supported list) DirectX Version: DirectX 9.0c Sound: DirectX 9.0c-compliant sound card Hard Drive: 4.8GB free hard disk space *Supported Video Cards at Time of Release: ATI RADEON 8500/9000/X families,NVIDIA GeForce 3/4/FX/6/7 families (GeForce 4MX NOT supported) Laptop versions of these cards may work but are NOT supported. These chipsets are the only ones that will run this game.