In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 4 MX 440 are massively better than the AMD Radeon X1200 128mb.

The Radeon X1200 128mb was released over three years more recently than the 4 MX, and so the Radeon X1200 128mb is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the 4 MX 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 Radeon X1200 128mb and the GeForce 4 MX 440 have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The 4 MX has 3.2 GB/sec greater memory bandwidth than the Radeon X1200 128mb, which means that the memory performance of the 4 MX is marginally better than the Radeon X1200 128mb.

The Radeon X1200 128mb has 4 Shader Processing Units and the GeForce 4 MX 440 has 2. 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.