In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 480M are very slightly better than the Nvidia GeForce 940MX 2GB.

The GeForce 940MX 2GB has a 697 MHz higher core clock speed but 20 fewer Texture Mapping Units than the GeForce GTX 480M. The lower TMU count doesn't matter, though, as altogether the GeForce 940MX 2GB manages to provide 8.2 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce 940MX 2GB has a 697 MHz higher core clock speed than the GeForce GTX 480M, but the GeForce GTX 480M has 24 more Render Output Units than the GeForce 940MX 2GB. As a result, the GeForce GTX 480M exhibits a 4.6 GPixel/s better Pixel Fill Rate than the GeForce 940MX 2GB. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce 940MX 2GB was released over three years more recently than the GeForce GTX 480M, and so the GeForce 940MX 2GB is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce GTX 480M when running the latest games.

The GeForce 940MX 2GB and the GeForce GTX 480M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GeForce GTX 480M has 60.8 GB/sec greater memory bandwidth than the GeForce 940MX 2GB, which means that the memory performance of the GeForce GTX 480M is much better than the GeForce 940MX 2GB.

The GeForce 940MX 2GB has 384 Shader Processing Units and the GeForce GTX 480M has 352. However, the actual shader performance of the GeForce 940MX 2GB is 644 and the actual shader performance of the GeForce GTX 480M is 299. The GeForce 940MX 2GB having 345 better shader performance is not particularly notable, as altogether the GeForce GTX 480M performs better when taking into account other relevant data.

The GeForce 940MX 2GB transistor size technology is 12 nm (nanometers) smaller than the GeForce GTX 480M. This means that the GeForce 940MX 2GB is expected to run slightly cooler and achieve higher clock frequencies than the GeForce GTX 480M.

The GeForce 940MX 2GB requires 25 Watts to run and the GeForce GTX 480M requires 100 Watts. The GeForce GTX 480M requires 75 Watts more than the GeForce 940MX 2GB to run. The difference is significant enough that the GeForce GTX 480M may have an adverse affect on your yearly electricity bills in comparison to the GeForce 940MX 2GB.