Lenovo ThinkPad 15.6" T510 Core i5-540M Laptop Windows 10 4GB RAM 250GB HD DVD WiFi Power Adapter
Intel Core i5 540M 2.53GHz Dual-Core (CP80617004116AD) Processor for sale online | eBay
Core i5-540M versus Core i3-4010U | processor comparison | PC Builds
Intel CP80617004116AD - 2.53Ghz 2.5GT/s 3MB PGA988 Intel Core i5-540M Dual Core CPU Processor - CPU Medics
Intel SLBPG - 2.53Ghz 2.5GT/s 3MB PGA988 Intel Core i5-540M Dual Core CPU Processor - CPU Medics
HP EliteBook 8440p 14" Intel Core i5-540M 2.53GHz / 2GB / 250GB vs HP Pavilion dv4 14" Intel Core i3-2310M 2.1GHz / 4GB / 500GB: What is the difference?