Fremont, CA - April 28, 2008 - Antec, Inc., the leading global brand of high-performance computer components for the PC upgrade and Do-It-Yourself markets, has launched the Twelve Hundred PC enclosure, the next evolution of its best-selling Nine Hundred case. With an advanced cooling system, a spacious design and other convenient features, the Twelve Hundred is an excellent choice for gamers and other high-performance PC builders.