HP Pavilion 21-h116 All-in-One TouchSmart 21" FULL HD Display Desktop PC Intel Pentium G3220T 1.5GHz/ 2.6GHz Accelerated Processor 4GB DDR3 500GB Windows 8.1 2.6GHz Intel Pentium G3220T Dual-Core Processor 4GB DDR3 RAM / 500GB 7200RPM Hard Drive Intel HD Graphics Windows 8.1