HP 500B Microtower Business Pc, Microsoft Windows 7 Professional 32-BIT, Intel P (Discontinued by Manufacturer) Intel Pentium dual-core E5700 3.00GHz 1GB DDR3 1333 160GB 7200rpm SATA 3.0 Gb/s NCQ, Smart IV, 16X SATA DVD-ROM Drive Integrated Intel Graphics Media Accelerator 4500 (GMA 4500) Windows 7 Professional 32-bit