Steam packshot image
Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation. It is used to distribute games and related media online, from small independent developers to larger software houses; Valve has also announced plans to expand the service to include non-gaming software in the near future.
Steam GPU Performance Comparison Graph

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

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

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

We are advised that -50 year old graphics cards should be able to run Steam , 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 Steam graphics card requirements chart below.