HP Pavilion p6-2136 AMD Fusion Quad-Core A6-3620 2.2GHz 6GB 500GB DVD&plusmn;RW DL Windows 7 Home Premium HP Pavilion p6-2136 AMD Fusion Quad-Core A6-3620 2.2 GHz Desktop PC General Features: Microsoft Windows 7 Home Premium 64-bit pre-installed AMD Fusion Quad-Core A6-3620 2.2 GHz processor 3 MB Intel Smart Cache, 5 GT/s DMI 6 GB DDR3 RAM 500 GB SATA hard drive DVD RW DL SATA drive Integrated Graphics Media Accelerator HD Integrated Realtek ALC656-GR High Definition 5.1-channel audio