World of Warcraft Cataclysm System Requirement

Minimum System Requirement:

OS:Windows XP (SP3),Windows Vista (SP2) and Windows 7 (SP1)
Processor:Intel Pentium 4 1.5GHz
RAM:512MB(1GB for Windows Vista and 7)
VRAM:64MB
DirectX:9.0c
Hard Disk:4GB

Recommended System Requirement:
OS:Windows XP (SP3),Windows Vista (SP2) and Windows 7 (SP1)
Processor:Intel Pentium D 3GHz
RAM:2GB
VRAM:256MB
DirectX:9.0c
Hard Disk:4GB