Product Detail Dell OptiPlex 745 Core 2 Duo 1.86 GHz System General Features: Small form factor Microsoft Windows XP Home Edition pre-installed w/CoA Intel Pentium Core 2 Duo E6300 1.86 GHz processor 1066 MHz Front Side Bus (FSB) 2 MB L2 cache Intel Q965 Express chipset 1 GB DDR2 333 MHz SDRAM (8 GB maximum (4 GB @ 800 MHz)) 80 GB SATA hard drive . The "Dell OptiPlex 745 Core 2 Duo E3600 1.86GHz 1GB 80GB CDRW/DVD XP Home Small Form Factor" is best product for you. We recommended Dell OptiPlex 745 Core 2 Duo E3600 1.86GHz 1GB 80GB CDRW/DVD XP Home Small Form Factor