HP Pavilion A6650F Desktop PC (2.2 GHz AMD Phenom X4 9550 Quad-Core Processor, 6 GB RAM, 500 GB Hard Drive, DVD Drive, Vista Premium) (Discontinued by Manufacturer) Desktop PC with 2.2 GHz AMD Phenom X4 9550 Quad-Core Processor with 2MB L2+2MB Shared L3 Cache 6GB PC2-6400 DDR2 SDRAM Memory (2x2048MB 2x1024MB) (Expandable Up to 8GB), 500GB 7200RPM Serial ATA Hard Drive NVIDIA GeForce 6150 SE Graphics with TurboCache with 128MB Dedicated Graphics Memory SuperMulti DVD Burner with LightScribe Technology, Integrated 10/100Base T Network Interface Windows Vista Home Premium, dims in inches: 6.89 (W) x 9.64 (L/D) x 16.28 (H) approx., 22 lbs approx