HP Pavillion 18" All-in-One Desktop, AMD Dual Core 1.4 GHz Processor, 4GB DDR3, 500GB HDD (Certified Refurbished) This Certified Refurbished product is factory refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty AMD E1-2500 Accelerated Processor (Dual Core, 1.4 GHz), 4GB DDR3L 1600MHz SDRAM, 500GB Hard Drive, DVDRW (R DL) 18.5 diagonal widescreen HD LED backlit display, AMD Radeon HD 8240 Graphics. Up to 2048MB Total Available Graphics Memory HD Webcam, 802.11 b/g/n WiFi, 1G LAN Ethernet, multi-format digital media reader, 1 USB 3.0, 4 USB 2.0 Windows 8.1 64 bit Pre-installed, free upgrade to Windows 10