Hp Compaq Dc5000 Small Form Factor with 2.8ghz Hyperthreading Intel CPU Processor Upgrade and 1gb Ddr1, 40gbyte Harddisk and Cdrom Drive HP dc5000 Pentium 42.8 GHzDesktop System General Features: Small Form Factor Microsoft Windows XP Professional Edition Certificate of Authenticity sticker No Operating System installed or included Intel Pentium 42.8 GHz processor 40 GB hard drive 512 MB RAM CD-ROM drive NoFloppydrive Integrated video Integrated audio Integrated 10/100 Ethernet controller