This document summarizes the system requirements for different versions of Windows from Windows 1.0 to Windows 8. It shows that as newer versions of Windows were released, the recommended system requirements increased, requiring faster processors, more RAM, larger hard drive space and more advanced graphics cards. For example, Windows 1.0 required 256KB of RAM while Windows 8 requires at least 1GB of RAM and 16GB of free hard drive space for 32-bit or 20GB for 64-bit.