Recommended: Supported OS: Windows XP SP3/Windows Vista SP1 (only) Processor: 2.6 GHz dual-core (3 GHz for Intel Pentium D 925) Memory: 1 GB (2 GB Recommended) Graphics: 128 MB DirectX 9.0c compliant, Shader 3.0–enabled (see supported list*) DirectX Version: DirectX 9.0 or 10.0 Sound: DirectX 9.0 or 10.0 compliant Hard Drive: 8 GB free hard disk space Multiplay: Broadband internet connection with 384 Kbps upstream *Supported Video Cards at Time of Release: ATI RADEON X1600/1650–1950/HD 2000/3000 series, NVIDIA GeForce 6800/7/8/9 series. Laptop versions of these cards may work but are NOT supported. These chipsets are the only ones that will run this game.