Lenovo ThinkPad X31, 1,6 GHz, 30,7 cm (12.1"), 1024 x 768 pixels, 0,25 GB, 40 GB, Windows XP Professional Lenovo ThinkPad X31. Processor frequency: 1,6 GHz. Display diagonal: 30,7 cm (12.1"), Display resolution: 1024 x 768 pixels. Internal memory: 0,25 GB, Internal memory type: DDR-SDRAM. Total storage capacity: 40 GB. Discrete graphics card model: AMD Mobility Radeon 7000. Operating system installed: Windows XP Professional. Weight: 1,64 kg