HP 15-r029wm 15.6" Laptop Quad-Core Processor @ 2.42GHz Intel 4GB Memory 500GB HD Windows 8.1 Processor: Intel Pentium N3520 Processor (2.17GHz, with Turbo Boost up to 2.42GHz). Memory: 4GB DDR3L SDRAM (1 DIMM). Storage: 500GB 5400RPM Hard Disk Drive. Display: 15.6-inch diagonal HD BrightView LED-backlit display (1366x768). Operating System: Windows 8.1 (64-bit).