Sony VAIO T Series SVT131190X 13.3-Inch Ultrabook (Silver Mist) / 3rd gen Intel&reg; Core&trade; i5-3317U / 4G / 500GB + 32GB MLC hybrid hard drive with RAID 0 / Windows 7 3rd gen Intel Core i5-3317U (1.70GHz / 2.60GHz with Turbo Boost); Genuine Windows 7 Home Premium 64-bit 4GB (4GB fixed onboard + 1 open slot) DDR3-1333Mhz. 500GB (5400rpm) + 32GB MLC hybrid hard drive with RAID 0 13.3" LED backlit display (1366 x 768); Intel HD Graphics 4000 Internal lithium polymer battery (4050mAh)