HP Compaq Presario R4130EA, 39.1 cm (15.4"), 1280 x 800 pixels, 0.5 GB, DDR-SDRAM, 80 GB, Windows XP Home Edition HP Compaq Presario R4130EA. Display diagonal: 39.1 cm (15.4"), Display resolution: 1280 x 800 pixels. Internal memory: 0.5 GB, Internal memory type: DDR-SDRAM. Total storage capacity: 80 GB. Discrete graphics card model: AMD Radeon Xpress 200M. Operating system installed: Windows XP Home Edition. Weight: 3.6 kg