HP Pavilion a6530f Phenom X3 8450 2.1GHz 4GB 640GB DVD&plusmn;RW DL Vista Home Premium HP Pavilion a6530f Phenom X3 8450 2.1 GHz Desktop PC General Features: Black color with silver trim Microsoft Windows Vista Home Premium 64-bit with SP1 pre-installed w/CoA AMD Phenom X3 8450 2.1 GHz Triple-Core CPU 4 GB PC2-6400 DDR2 SDRAM (actual available memory may be less due to operating system requirements) 640 GB SATA/300 7200RPM hard drive