Hardware Requirement for Windows Server 2012

The official requirements for installing Windows Server 2012 are as follows:

Processor: Minimum: 1.4 GHz 64-bit Processor
RAM: Minimum: 512 MB
Disk Space: Minimum: 32 GB

Note: Be aware that 32 GB should be considered an absolute minimum value for successful installation. The system partition will need extra space for any of the following circumstances:

• If you install the system over a network.
• Computers with more than 16 GB of RAM will require more disk space for paging, hibernation, and dump files.

Other requirements include:

• DVD Drive
• Super VGA (800x600) or higher resolution monitor
• Keyboard and Microsoft® mouse (or other compatible pointing device)
• Internet Access

- See more at: http://blogs.technet.com/b/bobh/archive/2013/02/11/requirements-for-a-fresh-windows-server-2012-installation.aspx#sthash.MN2BHxGE.dpuf