HP 550, Intel® Core™2 Duo, 1.6 GHz, 15.4", 1280 x 800 pixels, 2 GB, 250 GB HP 550. Processor family: Intel® Core™2 Duo, Processor model: T5470, Processor frequency: 1.6 GHz. Display diagonal: 15.4", Display resolution: 1280 x 800 pixels. Internal memory: 2 GB, Internal memory type: DDR2-SDRAM. Total storage capacity: 250 GB. Discrete graphics card model: Intel® GMA X3100. Operating system installed: Windows Vista Business. Weight: 5.51 lbs (2.5 kg)