Windows Vista Home Basic System Requirements :
Processor : Processor at least 800 Mhz for 32-bit and 64-bit
HDD : 20 GB of hard drive capacity with 15 GB free space
RAM : 512 MB
Graphics Card : DirectX 9-class graphics card
Windows Vista Home Premium, Windows Vista Business, Windows Vista Enterprise, and Windows Vista Ultimate :
Processor : 1-gigahertz (GHz) 32-bit (x86) processor or 1-GHz 64-bit (x64) processor
HDD : 40 GB hard disk capacity 15 GB of free hard disk space (the
15GB of free space provides room for temporary file
storage during the install or upgrade.)
RAM : 512 MB
Graphics Card : A graphics processor that runs Windows Aero
(DirectX 9 class graphics processor that
supports WDDM Driver, Pixel Shader 2.0 in hardware and 32 bits per
pixel with big enough graphics
memory)
