Rainbow Six: Siege GPU Analysis
Comparing Rainbow Six: Siege PC system requirements to all GPUs shows that Rainbow Six: Siege is going to need a graphics card that is capable of OpenGL 4.2.

To get the best visual graphical experience on Rainbow Six: Siege, aim to have a GPU that has at least 2GB GPU RAM.

Only top performance graphics cards currently available today, will probably allow you to play Rainbow Six: Siege

We are advised that 11 year old graphics cards should be able to run Rainbow Six: Siege, 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 Rainbow Six: Siege graphics card requirements chart below.