NASA, the double-helix model, Elvis ... there's a long list of things that emerged during the 1950s which still resonate strongly in 2011, but none more so than the humble silicon transistor. Transistors are the bricks with which the shiny house of modern consumer electronics has been built, but for more than 50 years these bricks have been limited to two dimensions. Now there's a third. Intel has announced that it is putting its revolutionary Tri-Gate 3-D transistor into mass production. The first 22nm microprocessor (codenamed Ivy Bridge) to use the transistors will be rolled-out later this year, delivering huge gains in performance and efficiency compared with chips that use current 2-D planar transistors and helping keep pace with Moore's Law.