Port Royale 4 GPU Analysis
Comparing Port Royale 4 PC system requirements to all GPUs shows that Port Royale 4 is going to need a graphics card that is capable of OpenGL 4.5.

To get the best visual graphical experience on Port Royale 4, aim to have a GPU that has at least 4GB GPU RAM.

Only top performance graphics cards currently available today, will probably allow you to play Port Royale 4

We are advised that 6 year old graphics cards should be able to run Port Royale 4, but there could be a few exceptions to this rule.

Note that most games do not officially support laptop graphics cards, but nowadays many laptop graphics solutions are capable of running modern games. Whether desktop graphics cards or laptop, try searching for your graphics card to compare against the Port Royale 4 graphics card requirements chart below.