Processor requirement:

• The minimum clock speed for installing windows server 8 is 1.4 Ghz. and 64bit processor.
• Windows server 8 supports minimum 1 CPU to multiple cores to enhance the performance of the windows Server 8

Primary Memory (RAM) Requirement:

• A minimum of 2 GB RAM is required to install OS. But it require more RAM to perform various services, Typically more then 8 GB RAM is required.

Disk Space:  Minimum 32GB Hard Disk is required to install basics. But it requires more and more Hard disk space store your program files, Database files, Paging, hibernation etc.,