First Impressions: Lenovo ThinkPad X250 Notebook Review - NotebookCheck.net Reviews
Lenovo ThinkPad X250 - Full Review and Benchmarks | Laptop Mag
ThinkPad X250 (20CM002WUS) Ultrabook Intel Core i7 5600U (2.60 GHz) 8 GB Memory 256 GB SSD Intel HD Graphics 5500 15.6" Windows 7 Pro 64-Bit downgrade rights in Windows 8.1 Pro 64-Bit - Newegg.com