Windows 8.1 Professional 64 bit DVD
System requirements
Windows 8.1
Processor. 1 gigahertz (GHz)* or faster with support for PAE, NX, and SSE2
RAM. 1 gigabyte (GB) (32-bit) or 2 GB (64-bit)
Hard disk space. 16 GB (32-bit) or 20 GB (64-bit)
Graphics card. Microsoft DirectX 9 graphics device with WDDM driver
