HP Compaq Elite 8300 23" All-in-One Business Desktop PC - B8U43UT Form Factor - All-in-One Operating system - Windows 7 Professional 64 Processor - Intel Core i3-3220 with Intel HD Graphics 2500 (3.30 GHz, 3 MB cache, 2 cores) Standard memory - 4GB 1600 MHz DDR3 SDRAM Internal drive - 500GB 7200 rpm SATA 6.0 Gb/s NCQ, Smart IV