HP 22-3040 21.5 Inch Touchscreen All-in-One Desktop (AMD A6 6130, 4 GB RAM, 500 GB HDD, AMD Radeon R4 Graphics) AMD A6-6310 1.8 GHz Processor 4.0 GB DDR3 RAM 500 GB 7200RPM Hard Drive 21.5 Inches (1920x1080 pixels) Screen, AMD Radeon R4 Graphics Windows 8.1 Operating System