Intel Core i5 3330 Processor with 3.0Ghz Intel H61 Chipset 4GB DDR3 1600Mhz Memory 500GB 7200RPM Hard Drive Integrated Graphic 24X DVD-RW Drive GB Lan Windows 7 Pro & Windows 8 Pro Keyboard & Mouse Included Energy Star 5.2 EPEAT Gold COM Port and Parallel Port 100% Solid Cap