Acer Desktop PC Aspire T ATC-605-UR19 Intel Core i5 4440 (3.10GHz) 4GB DDR3 500GB HDD Windows 8.1 64-Bit Intel Core i5-4440 (3.1GHz), 64 bit Quad-Core Processor with 6MB L3 Cache Per CPU 4 GB DDR3 RAM (Expandable to 16GB); 500 GB 7200 rpm Hard Drive DVD+/-RW; Intel HD Graphics 4600 2x USB 3.0 Ports; 4x USB 2.0 Ports No Monitor or Speaker included.