Legacy Intel® Core™ Processor Intel Core i5-xxx Lenovo ThinkPad T510i, Intel® Core™ i5, 2.53 GHz, 39.6 cm (15.6"), 1366 x 768 pixels, 4 GB, 320 GB Lenovo ThinkPad T510i. Processor family: Intel® Core™ i5, Processor model: i5-540M, Processor frequency: 2.53 GHz. Display diagonal: 39.6 cm (15.6"), Display resolution: 1366 x 768 pixels. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM. Total storage capacity: 320 GB, Optical drive type: DVD-RW. On-board graphics card model: Intel® HD Graphics. Operating system installed: Windows 7 Professional. Product color: Black. Weight: 2.67 kg