General Status W2 Product Type Notebook Operating System Microsoft Windows 7 Professional 64-bit Edition / Windows 8 Pro downgrade Preinstalled OS Windows 7 Processor / Chipset CPU AMD A series A6-4400M / 2.7 GHz Max Turbo Speed 3.2 GHz Number of Cores Dual-Core Cache 1 MB 64-bit Computing Yes Chipset AMD A76M FCH Memory RAM 4 GB ( 1 x 4 GB ) Max RAM Supported 16 GB Technology DDR3L SDRAM Speed 1600 MHz / PC3L-12800 Form Factor SO DIMM 204-pin Slots Qty 2 Empty Slots 1 Storage Main Storage 500 GB HDD / 7200 rpm Interface SATA 3 Gb/s Optical Drive DVD±RW (±R DL) / DVD-RAM - fixed - tray