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Blizzard has posted updated PC and Mac user specifications today via the official World of Warcraft forums for the impending expansion, Wrath of the Lich King. User comments to the thread note that the revised specs are more intensive for Mac users than PC users. The blue post states up front that while these are recommended specs, they are certainly not required to be able to play the game.
PC System Requirements
OS: Windows XP (Service Pack 3), Windows Vista (Service Pack 1)
Processor:
Minimum: Intel Pentium 4 1.3 GHz or AMD Athlon XP 1500+
Recommended: Dual-core processor, such as the Intel Pentium D or AMD Athlon 64 X2
Memory:
Minimum: 512 MB RAM (1GB for Vista users)
Recommended: 1 GB RAM (2 GB for Vista users)
Video:
Minimum: 3D graphics processor with Hardware Transform and Lighting with 32 MB VRAM
Such as an ATI Radeon 7200 or NVIDIA GeForce 2 class card or better
Recommended: 3D graphics processor with Vertex and Pixel Shader capability with 128 MB VRAM
Such as an ATI Radeon X1600 or NVIDIA GeForce 7600 GT class card or better
Sound: DirectX-compatible sound card or motherboard sound capability
Mac System Requirements
OS: Mac OS X 10.4.11 or newer
Processor:
Minimum: PowerPC G5 1.6 GHz or Intel Core Duo processor
Recommended: Intel 1.8GHz processor or better
Memory:
Minimum: 1 GB RAM
Recommended: 2 GB RAM
Video:
Minimum: 3D graphics processor with Hardware Transform and Lighting with 64 MB VRAM
Such as an ATI Radeon 9600 or NVIDIA GeForce Ti 4600 class card or better
Recommended: 3D graphics processor with Vertex and Pixel Shader capability with 128 MB VRAM
Such as an ATI Radeon X1600 or NVIDIA 7600 class card or better
All Platforms
Controls: A keyboard and mouse are required. Input devices other than a mouse and keyboard are not supported.
Connectivity: You must have an active broadband Internet connection to play.
Mouse: Multi-button mouse with scroll wheel recommended.
Hard Drive Space: 15 GB free hard drive space
Stay tuned for GameSpy’s BlizzCon 2008 coverage and our extended beta coverage of Wrath of the Lich King.


Article Source: www.gamespy.com.