Modern Warfare 3 GPU Analysis
Comparing Modern Warfare 3 PC system requirements to all GPUs shows that Modern Warfare 3 is going to need a graphics card that is capable of OpenGL 2.0.

To get the best visual graphical experience on Modern Warfare 3, aim to have a GPU that has at least 256MB GPU RAM.

Most bottom end graphics cards currently available today, will probably allow you to play Modern Warfare 3

We are advised that 16 year old graphics cards should be able to run Modern Warfare 3, 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 Modern Warfare 3 graphics card requirements chart below.