CPU - XP: 2.0 GHz P4 processor or equivalent; Windows Vista and Windows 7: 2.4 GHz P4 processor or equivalent RAM - XP: 1 GB; Vista and Windows 7: 1.5 GB (NVIDIA ION computer require at least 2 GB) Disc Drive - DVD drive Hard Drive - At least 1.5 GB of hard drive space with at least 1 GB of additional space for custom content and saved games (7 GB required if installing with The Sims 3) Video Card - DirectX 9.0c compatible video card wth 128 MB video RAM and support for pixel shader 2.0 support (see www.thesims.com for the full video card support information)