The Ultrabook is a type of laptop, trademarked by Intel, that falls into the thin and lightweight laptop category (considered ultraportable laptops). It is Intel's attempt to compete against the tablet computers running ARM processors. The Ultrabooks use Sandy Bridge, Ivy Bridge, and Haswell processor architecture developed by Intel. The picture shows an ASUS Zenbook, an example of an Ultrabook.
The first Ultrabooks were released in the 4th quarter 2011 as the first phase, under the brands of Acer, ASUS, Lenovo, and Toshiba. They use SSD (solid-state drives) for storage and feature the Intel Core i3, i5, or i7 processor. Each Ultrabook is no thicker than 20 mm, weighs 3.1 pounds or less, has a battery life of 5 to 8 hours, and has a price point of under $1000 for base models.
The second phase of Ultrabooks was released in 2012 and feature a 30% increase in integrated graphics performance and 20% increase in CPU performance.