Computer: 400 MHz Pentium II or equivalent, or a 400 MHz G3 processor or better. Operating Systems:Windows 98, Windows ME, Windows 2000, or Windows XP. Warcraft III requires Mac OS® 9.0 or higher, or Mac OS X® 10.1.3 or higher. Memory: Warcraft III requires 128 MB of RAM. Controls: A keyboard and mouse are required. Video: 8MB 3D video card (TNT, i810, Voodoo 3, Rage 128 equivalent or better) with DirectX 8.1 support. For Mac OS® systems, a video card consisting of an ATI Technologies or nVidia chipset with at least 16 MB of memory is required. Sound: A DirectX-compatible 16-bit sound card is recommended. Warcraft III will work with the built-in sound features of the Mac OS®.