System Manufacturer/Model Number: ASUS Self Built OS: windows 7 professional 64bit CPU: AMD Athlon 64 X2 Dual Core Processor 4200+ Motherboard: ASUS M2A-MX Memory: 4GIG DDR2 (PC2-5300) Graphics Card: ATI Radeon HD 3450 Sound Card: Realtek ALC66a High Definition Audio 6-channel CODEC Monitor(s) Displays: Hanns.G Hi221 Screen Resolution: Current Resolution 1680 x 1050 @ 61Hz Hard Drives: Manufacturer Hitachi Model Hitachi HDS721616PLA380 Size 160.0 GB ( 3 of them )