In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 540X 4GB Mobile are significantly better than the Nvidia GeForce GTX 950M 2GB.

The RX 540X has a 210 MHz higher core clock speed than the GTX 950M, but the GTX 950M has 8 more Texture Mapping Units than the RX 540X. As a result, the GTX 950M exhibits a 0.6 GTexel/s better Texture Fill Rate than the RX 540X. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The RX 540X has a 210 MHz higher core clock speed than the GTX 950M and the same number of Render Output Units. This results in the RX 540X providing 3.4 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The RX 540X was released over three years more recently than the GTX 950M, and so the RX 540X is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 950M when running the latest games.

The RX 540X has 2048 MB more video memory than the GTX 950M, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The GTX 950M has 80 GB/sec greater memory bandwidth than the RX 540X, which means that the memory performance of the GTX 950M is much better than the RX 540X.

The Radeon RX 540X 4GB Mobile has 512 Shader Processing Units and the GeForce GTX 950M 2GB has 640. However, the actual shader performance of the RX 540X is 624 and the actual shader performance of the GTX 950M is 858. The GTX 950M having 234 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 950M delivers a noticeably smoother and more efficient experience when processing graphical data than the RX 540X.

The RX 540X transistor size technology is 14 nm (nanometers) smaller than the GTX 950M. This means that the RX 540X is expected to run slightly cooler and achieve higher clock frequencies than the GTX 950M.

The Radeon RX 540X 4GB Mobile requires 50 Watts to run and the GeForce GTX 950M 2GB requires 50 Watts. We would recommend a PSU with at least 350 Watts for the RX 540X. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.