Windows Server 2012 Release Candidate is now available for download and testing.It comes in two flavors, 64 bit ISO and VHD.
Processor:Minimum: 1.4 GHz 64-bit processor
Ram:Minimum: 512 MB
Disk Space:Minimum: 32 GB
Other:DVD drive,Super VGA (800 x 600) or higher-resolution monitor,Keyboard and mouse