Lenovo's new ThinkPad X1 Carbon ultrabook, which was unveiled back in the middle of May this year, will become available for purchase on 21st of August in the U. S., with a starting price tag of $1,399.

The upcoming super slim ultrabook is the successor to the ThinkPad X1. It features a light weight form factor created from carbon fibre materials. It weighs just not more than 3 pounds, and measures just 0.7 inches at its thickest with a minor wedge form tapering to its front.

The ultrabook features a matte finish and a 14-inch, 1,600 by 900-pixel-resolution display along with Intel vPro management technology and BIOS locker.

The entry-level version of the ThinkPad X1 Carbon comes equipped with a 1.7GHz Core i5-3317U processor, 4GB of RAM, and a 128GB SSD & Intel's HD integrated graphics.

The next model, which costs $1,499, features a 1.8GHz Core i5 processor and a 128GB SSD; while the penultimate ultrabook has been priced at $1,649 and include a 1.8GHz Core i5 processor and 256GB of SSD.

The top-most model features a 2GHz Core i7 processor and costs $1,849.

All of the above mentioned models of the new ultrabook run Microsoft's Windows 7 Professional right out of the box. The ultrabooks also boasts RapidCharge utility that can charge the device's 45Wh battery to its 80 per cent capacity in just half an hour.