In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 940MX 2GB are massively better than the Nvidia NVS 4200M.

The GeForce 940MX 2GB was released over three years more recently than the NVS 4200M, 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 NVS 4200M when running the latest games.

The GeForce 940MX 2GB has 1024 MB more video memory than the NVS 4200M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce 940MX 2GB also has superior memory performance overall.

The GeForce 940MX 2GB has 3.2 GB/sec greater memory bandwidth than the NVS 4200M, which means that the memory performance of the GeForce 940MX 2GB is marginally better than the NVS 4200M.

The GeForce 940MX 2GB has 384 Shader Processing Units and the NVS 4200M has 48. However, the actual shader performance of the GeForce 940MX 2GB is 644 and the actual shader performance of the NVS 4200M is 78. The GeForce 940MX 2GB having 566 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 940MX 2GB delivers a noticeably smoother and more efficient experience when processing graphical data than the NVS 4200M.

The GeForce 940MX 2GB transistor size technology is 12 nm (nanometers) smaller than the NVS 4200M. This means that the GeForce 940MX 2GB is expected to run slightly cooler and achieve higher clock frequencies than the NVS 4200M.

The GeForce 940MX 2GB requires 25 Watts to run but there is no entry for the NVS 4200M.