Acer Veriton M 2631/ X2631 - Intel Core i5-4440 (6MB Intel Smart Cache 3.10GHz up to 3.30GHz with Intel Turbo Boost Technology) Memory: 4GB (4/0) DDR3 SDRAM Storage: 500GB SATA hard drive 7200RPM; Super-Multi drive Graphics: Integrated Intel HD Graphics 4600 (350MHz base frequency 1.10GHz max dynamic frequency) Communications: Gigabit LAN OS: Choice of Windows 8 Pro (64-bit) or Windows 7 Professional (SP1 64-bit) Black with silver Chassis