In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 540 4GB Mobile are massively better than the AMD Radeon R9 M365X 4GB.

The RX 540 has a 499 MHz higher core clock speed but 8 fewer Texture Mapping Units than the R9 M365X. The lower TMU count doesn't matter, though, as altogether the RX 540 manages to provide 11 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 RX 540 has a 499 MHz higher core clock speed than the R9 M365X and the same number of Render Output Units. This results in the RX 540 providing 8 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 540 was released over a year more recently than the R9 M365X, and so the RX 540 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the R9 M365X.

The Radeon RX 540 4GB Mobile and the Radeon R9 M365X 4GB have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The R9 M365X has 64 GB/sec greater memory bandwidth than the RX 540, which means that the memory performance of the R9 M365X is much better than the RX 540.

The Radeon RX 540 4GB Mobile has 512 Shader Processing Units and the Radeon R9 M365X 4GB has 640. However, the actual shader performance of the RX 540 is 624 and the actual shader performance of the R9 M365X is 340. The RX 540 having 284 better shader performance and an altogether better performance when taking into account other relevant data means that the RX 540 delivers a marginally smoother and more efficient experience when processing graphical data than the R9 M365X.

The RX 540 transistor size technology is 14 nm (nanometers) smaller than the R9 M365X. This means that the RX 540 is expected to run slightly cooler and achieve higher clock frequencies than the R9 M365X.

The Radeon RX 540 4GB Mobile requires 50 Watts to run and the Radeon R9 M365X 4GB requires 50 Watts. We would recommend a PSU with at least 350 Watts for the RX 540. 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.