HP Business Desktop PC EliteDesk 700 G1 K1L63UT (3.30GHz Intel Core i5 4590 processor, 4GB DDR3 memory, 500GB HDD, Windows 7 Professional 64) Intel Core i5-4590 64 bit Quad Core 3.3 GHz, Intel Q87 Chipset, 6MB L3 Cache, Windows 7 Professional 64 installed with Windows 8.1 Pro 4 GB (1x4 GB) DDR3 1600 MHz 500 GB 7200 rpm Hard Drive, DVD RW Optical Drive USB Keyboard & USB Mouse, Intel HD Graphics 4600 Integrated video, Gigabit Ethernet HP EliteDesk Business Desktops & Workstations, Limited Warranty period (parts): 3 years Limited Warranty period (labor): 3 years