HP Pavilion Sleekbook 15-b142dx 16-Inch Laptop (2.6GHZ AMD A6 4455M Accelerated Processor, 4GB RAM, 500GB Hard Drive, Windows 8) 2.1 GHz up to 2.6GHz AMD A6-4455M Accelerated Processor, 1MB L2 Cache, Altec Lansing dual speakers with Dolby Advanced Audio, Windows 8 (64-bit) 16-inch diagonal HD BrightView LED-backlit display (1366x768), AMD Radeon HD 7500G Discrete-Class graphics and up to 2033MB total graphics memory 4GB DDR3 SDRAM (1 DIMM), Maximum supported 8GB, Multi-format digital media card reader for Secure Digital cards and Multimedia cards 500GB 5400RPM hard drive with HP ProtectSmart Hard Drive Protection, Full-size island-style keyboard with numeric keypad HP TrueVision HD Webcam with integrated digital microphone, 1 Universal Serial Bus (USB) 2.0. 1 HDMI, 1x1 802.11b/g/n WLAN