Your system should have at least the following specifications:
Processor:
4 GHz 64-bit processor.
Support for Second Level Address Translation (SLAT) or nested paging. SLAT is a processor technology that is used in virtual-to-physical memory address translation. Both AMD and Intel support SLAT. AMD's implementation is called Rapid Virtualization Indexing (RVI) and Intel's implementation is called Extended Page Tables (EPT).
Support for Data Execution Prevention (DEP) and No-Execute (NX). DEP/NX is a processor feature that allows you to mark memory pages as either executable or non-executable. It also allows a processor to help prevent the execution of malicious data being placed into your memory. Note that a 32-bit processor is not supported.
RAM: 512 MB, although the desirable minimum memory for a server with a GUI is 2 GB.
Disk/Storage: 32 GB of disk space and a PCI Express storage adapter. Older architectures (such as PATA, ATA, IDE, or EIDE) are not supported.