The Samsung 9 Series NP900X3A runs on Windows 7 Home Premium. Samsung 9 Series (NP900X3A) is powered by the “Sandy Bridge” based 2nd generation Intel Core i5 2537M ultra low voltage processor, currently available only in this notebook. Then there is the Intel GMA HD integrated graphics, 4GB of DDR3 memory, a 128GB solid state drive with 6-cell battery. The 13.3-inch display on the Samsung Series 9 laptop has 1366×768 display resolution with 400-nit screen. The ambient light sensor automatically adjusts the brightness. This has wide 160 degree viewing angles in both horizontal and vertical angles..For further details please visit http://www.homeshopsiliguri.com. (e-mail id:nis7134218152018531907@gmail.com)