Must Read!! Blizzard updates Wrath of the Lich King system requirements

PC:

• Windows XP SP3 or Vista SP1 (Windows 2000 no longer supported)
• Pentium 4 1.3 GHz or AMD Athlon XP 1.5 GHz (up from 800 MHz Intel/AMD). Dual-core recommended.
• RAM: 512 MB/1 GB for Vista, same as before. 1 GB/2 GB recommended.
• Video: GPU with hardware transform and lighting and 32 MB VRAM, same as before. Recommended 128 MB VRAM.

Mac:

• Mac OS X 10.4.11 (10.3 no longer supported)
• PowerPC G5 1.6 GHz or Intel Core Duo. G4s are no longer supported. Intel 1.8 GHz recommended.
• RAM: 1 GB, up from 512 MB. 2 GB recommended.
• Video: Hardware transform and lighting, 64 MB VRAM. 128 MB VRAM recommended.