Lenovo ThinkPad T41, 1.6 GHz, 14.1", 1024 x 768 pixels, 0.5 GB, 40 GB, Windows XP Professional Lenovo ThinkPad T41. Processor frequency: 1.6 GHz. Display diagonal: 14.1", Display resolution: 1024 x 768 pixels. Internal memory: 0.5 GB, Internal memory type: DDR-SDRAM. Total storage capacity: 40 GB, Optical drive type: DVD-ROM. Discrete graphics card model: AMD Mobility Radeon 7500. Operating system installed: Windows XP Professional. Weight: 4.96 lbs (2.25 kg)