HP Envy 15.6" 15t Quad Edition Laptop - 4th Gen Intel Quad Core i7 Processor, 2GB NVIDIA GeForce GT 740M Dedicated Graphics, 8GB Ram, 1TB Hard Drive, Windows 7, Beats Audio 4th generation Intel Quad Core i7-4700MQ Processor (2.4 GHz up to 3.4 GHz) NVIDIA GeForce GT 740M Graphics with 2048MB of dedicated video memory 8GB DDR3 System Memory, 1TB 5400 rpm Hard Drive, Windows 7 Home Premium 64 15.6-inch diagonal HD BrightView LED-backlit Display (1366x768), 6-Cell Lithium-Ion Battery No Internal DVD or CD Drive (external optical drive must be purchased separately if needed)