You will also need at least 1 GB of RAM if you're running on a 32-bit processor or 2 GB RAM for those on 64-bit, and hard disk space of 16 GB or 20 GB respectively. Windows 8.1 requires your machine to have at least a 1 GHz processor or faster with support for PAE, NX, and SSE2. Watch, pause, rewind, and record TV with Windows Media Center. Connecting to wireless networks is fast and easy. Takes full advantage of 64-bit PC hardware and memory. Designed to make your PC sleep and resume quicker. Windows 7 Home Premium supports the latest hardware and software.