TravelMate P645-S-59AG Notebook OS: Windows 8.1 Pro (64-bit) / Windows 7 Professional (SP1, 64-bit) Processor: Intel Core i5-5300U (3MB cache, 2.30GHz, up to 2.90GHz with Intel Turbo Boost Technology 2.0), Intel vPro Technology Memory: 8GB (4/4) DDR3L SDRAM Storage: 256GB SSD, SD card reader LED TFT LCD: 14" (1920 x 1080) IPS Graphics: Integrated Intel HD Graphics 5500 (300MHz base frequency, 900MHz max dynamic frequency) Communications: Intel Dual Band Wireless-N 7265 802.11ac WLAN (supports WiDi), Bluetooth 4.0, Intel Ethernet Connection I218-LM gigabit LAN, webcam Added Feature: Accelometer (G sensor)