Windows 7

1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor*
1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
16 GB available hard disk space (32-bit) or 20 GB (64-bit)
DirectX 9 graphics device with WDDM 1.0 or higher driver

Windows 8

1GHz (gigahertz) processor or faster. Your processor will either be 32 bits or 64 bits, and 64-bit processors will have stricter hardware requirements (see below).
1GB (gigabyte) RAM (32-bit) or 2GB RAM (64-bit).
16GB available hard disk space (32-bit) or 20GB (64-bit).
DirectX 9 graphics device with WDDM 1.0 or higher driver.
A screen resolution of at least 1024×768 pixels.

Windows 10

Processor: 1 gigahertz (GHz) or faster processor or SoC
RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit
Hard disk space: 16 GB for 32-bit OS or 20 GB for 64-bit OS
Graphics card: DirectX 9 or later with WDDM 1.0 driver
Display: 800 x 600