HP Probook 640 G1 - Intel Core i7 8Go 240Go SSD - Webcam - Pc Portable
HP ProBook 640 G1 Business Laptop, Intel Core i7-4th Generation CPU, 8GB RAM, 500GB HDD, 14 inch Display, Windows 10 Pro, Refurbished Laptop
HP ProBook 4540s 15.6" Intel Core i7-3612QM 2.1GHz / 4GB / 750GB vs HP ProBook 640 G1 14" Intel Core i5-4200M 2.5GHz / 8GB / 500GB: What is the difference?