World of Warcraft: Cataclysm MMORPG GameBlizzard revealed the system requirements for World of Warcraft: Cataclysm, the new expansion to launch on December 7.

Recommended:

OS: Windows XP 32bit (SP3), Windows XP 64bit (SP2), Windows Vista 32bit (SP1), Windows Vista 64bit (SP1)
Processor: Intel Pentium 4 1.3 GHz or AMD Athlon XP 1500
Memory: 1GB or more of RAM
Video: NVIDIA® GeForce® FX or ATI Radeon™ 9500 video card or better
Sound: DirectX-compatible sound card or motherboard sound capability
HDD: 25 GB free hard drive space
A keyboard and mouse are required. Input devices other than a mouse and keyboard are not supported
You must have an active broadband Internet connection to play

Optimum:

OS: Windows XP 32bit (SP3), Windows XP 64bit (SP2), Windows Vista 32bit (SP1), Windows Vista 64bit (SP1) Windows 7
Processor: Dual-core processor, such as the Intel Pentium D or AMD Athlon 64 X2
Memory: 2 GB RAM (2 GB for Vista users)
Video: 3D graphics processor with Vertex and Pixel Shader capability with 256 MB NVIDIA® GeForce® 8600 or ATI Radeon™
Sound: 2600 or better DirectX-compatible sound card or motherboard sound capability
Broadband Internet connection
Multi-button mouse with scroll wheel recommended