The Sony VAIO X Series won the title of world’s lightest notebook, weighing just 1.6 lbs. Yeah, Its lighter than MacBook Air and it measures just over a half-inch thick with its amazing lightweight carbon fiber body. Sony VAIO X powered by a 2GHz Intel processor and other features include a 6:9, LED-backlit LCD display, a multi-touch trackpad, 802.11n Wi-Fi, and Bluetooth, built-in Verizon 3G, SSD storage and its running on Windows 7. The Sony VAIO X series Priced at $1,300 and up.