In terms of overall gaming performance, the graphical capabilities of the Nvidia Quadro4 550 XGL are very slightly better than the Nvidia GeForce 4 MX 440.

The Quadro4 550 XGL was released less than a year after the 4 MX, and so they are likely to have similar driver support for optimizing performance when running the latest games.

Both GPUs exhibit very poor performance, so rather than upgrading from one to the other you should consider looking at more powerful GPUs. Neither of these will be able to run the latest games in any playable way.

The 4 MX has 64 MB more video memory than the Quadro4 550 XGL, so is likely to be slightly better at displaying game textures at higher resolutions. This is supported by the fact that the 4 MX also has superior memory performance overall.

The memory bandwidth of the Quadro4 550 XGL and the GeForce 4 MX 440 are the same, which means the Quadro4 550 XGL and the 4 MX have equal limitations when it comes to graphical data transfer.

Both the Quadro4 550 XGL and the GeForce 4 MX 440 have 2 Shader Processing Units. The two GPUs are based on different architectures, but deliver an equivalent shader performance. To compare, we must continue to look at the memory bandwidth, Texture and Pixel Rates. In this case, we sadly do not have enough data in this area to complete the comparison.