This Acer Veriton x275 desktop computer is a reliable and efficient choice for casual computing. It features a Pentium Dual-Core 3Ghz processor with a speed of 3.00 GHz, 4GB RAM, and a 500GB HDD (Hard Disk Drive) for storage. The operating system installed is Windows 8.1. This desktop computer is perfect for those who need a basic, yet capable machine for their everyday tasks.