Dark Souls GPU Analysis
Comparing Dark Souls PC system requirements to all GPUs shows that Dark Souls is going to need a graphics card that is capable of OpenGL 2.1.

To get the best visual graphical experience on Dark Souls, aim to have a GPU that has at least 512MB GPU RAM.

Most bottom end graphics cards currently available today, will probably allow you to play Dark Souls

We are advised that 16 year old graphics cards should be able to run Dark Souls, 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 Dark Souls graphics card requirements chart below.