I turned my Elitebook 2570p into multi purpose, triple boot (Windows 10, Manjaro Linux, macOS High Sierra) super laptop. Also can utilize egpu in every system : r/computers
Amazon.com: HP EliteBook 2570P Notebook PC - Intel Core i5 (2.70 GHz), 4GB Ram, 500GB HDD Windows 7 Pro : Electronics
Seifelden 16GB (2X8GB) Memory RAM for HP EliteBook 2570P Laptop Memory Upgrade - Walmart.com
12.5" HP Elitebook 2570P Owner's Lounge - HP Business Class Notebooks - Tech|Inferno Forums
HP Elitebook 2560P 12.5" I5 Laptop Windows 10 Home 4GB Ram 250GB Hard Drive DVD WiFi Power Adapter