HP 450 Slimline Desktop (Intel Celeron J1800 Dual Core 2.41GHz, 4 GB RAM, 500 GB HDD, DVDRW, Intel HD Graphics) Intel Celeron J1800 Dual Core 2.41 GHz 4 GB RAM, 500 GB HDD 7200RPM, DVDRW, Memory Card Reader Intel HD Graphics, DTS Studio Sound, USB Mouse and Keyboard 802.11b/g/n Wireless LAN, 1 VGA, 1 DVI Windows 8.1,Free upgrade to Windows 10 when available. Time limited offer from Microsoft. Internet connection required, with Windows Update enabled. ISP fees may apply.