Windows 8: works on the same hardware that powers Windows 7:
System Requirements:
Processor: 1 gigahertz (GHz) or faster
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
Additional requirements to use certain features:
To use touch, you need a tablet or a monitor that
supports multitouch.
To access the Windows Store and to download and run apps,
you need an active Internet connection and a screen resolution
of at least 1024 x 768.
To snap apps, you need a screen resolution of at least 1366 x 768.
Internet access (ISP fees might apply)
Microsoft account (LiveID) required for some features
Some features such as touch and Client Hyper-V may require
advanced or Windows 8 certified hardware
Microsoft Windows 8 that is the only operating system that runs on tablet, smartphones and desktop, making everyday office software works on all devices.
Windows 8 DOWNLOAD link
System Requirements:
Processor: 1 gigahertz (GHz) or faster
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
Additional requirements to use certain features:
To use touch, you need a tablet or a monitor that
supports multitouch.
To access the Windows Store and to download and run apps,
you need an active Internet connection and a screen resolution
of at least 1024 x 768.
To snap apps, you need a screen resolution of at least 1366 x 768.
Internet access (ISP fees might apply)
Microsoft account (LiveID) required for some features
Some features such as touch and Client Hyper-V may require
advanced or Windows 8 certified hardware
Microsoft Windows 8 that is the only operating system that runs on tablet, smartphones and desktop, making everyday office software works on all devices.
Windows 8 DOWNLOAD link