World of Warcraft: Legion GPU Analysis
Comparing World of Warcraft: Legion PC system requirements to all GPUs shows that World of Warcraft: Legion is going to need a graphics card that is capable of OpenGL 4.4.

To get the best visual graphical experience on World of Warcraft: Legion, aim to have a GPU that has at least 1GB GPU RAM.

Medium level graphics cards currently available today, will probably allow you to play World of Warcraft: Legion

We are advised that 9 year old graphics cards should be able to run World of Warcraft: Legion, 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 World of Warcraft: Legion graphics card requirements chart below.