HP Pavilion a6407c Athlon 64 X2 4400+ 2.3GHz 3GB 360GB DVD&plusmn;RW DL Vista Home Premium HP Pavilion a6407c Athlon 64 X2 4400+ 2.3 GHz Desktop PC General Features: Microsoft Windows Vista Home Premium 32-bit pre-installed w/CoA AMD Athlon 64 X2 4400+ 2.3 GHz Dual-Core Processor 3 GB DDR2 SDRAM (supports up to 4 GB) 360 GB SATA/300 (3 Gb/s) hard drive 16x DVD RW DL drive with LightScribe Technology 15-in-1 memory card reader