Performance comparison between ThinkPad P50 with NVidia M1000M, ThinkPad W701 with NVidia Quadro 2800M, ThinkPad X230 with Intel HD4000 and ThinkPad T520 with NVidia NVS 4200M – Ioannis Karagiorgos blog
Quadro - Wikipedia
Dell Latitude E6420, Intel Core i5-2nd Gen CPU, 4GB RAM, 320GB HDD, 14 inch , Nvidia NVS 4200M 512MB DDR3 Windows 10 Pro, Refurbished Laptop