Dell OptiPlex GX620 All-in-One Pentium 4 650 3.4GHz 2GB 160GB DVD 17" LCD XP Professional Dell OptiPlex GX620 Pentium 4 3.4 GHz All-in-One Desktop PC General Features: Ultra Small Form Factor design Microsoft Windows XP Professional pre-installed w/CoA Intel Pentium 4 650 3.4 GHz processor 2 MB L2 cache, 800 MHz FSB Speed, Hyper-Threading Technology Intel 945G chipset 2 GB DDR2 RAM (4 GB maximum) 160 GB SATA hard drive DVD-ROM drive Integrated Intel Graphics Media Accelerator 950