Sony VAIO VPCS137GX/B 13-Inches notebook Computer (2.66 GHz Intel dual core i5-480M processor, 4 GB memory, 640 GB Hard disk, Windows 7 professional 64-bit) Box Contents - Sony VPCS137GX/S Notebook, Standard Capacity Lithium-Ion Battery, AC power adapter Intel Core i5-480M 2.66GHz Dual-Core Processor with Turbo(R) Boost Technology up to 2.93GHz 3MB Smart Cache 4GB DDR3 1066MHz RAM (8GB max.) 640GB SATA Hard Drive