In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 210 1GB are significantly better than the Nvidia GeForce 8400 GS.
The GeForce 210 1GB has a 139 MHz higher core clock speed and the same number of Texture Mapping Units as the GeForce 8400 GS. This results in the GeForce 210 1GB providing 1.1 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 GeForce 210 1GB has a 139 MHz higher core clock speed than the GeForce 8400 GS and the same number of Render Output Units. This results in the GeForce 210 1GB providing 0.6 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 GeForce 210 1GB was released less than a year after the GeForce 8400 GS, 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 GeForce 210 1GB has 768 MB more video memory than the GeForce 8400 GS, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce 210 1GB also has superior memory performance overall.
The GeForce 210 1GB has 6.4 GB/sec greater memory bandwidth than the GeForce 8400 GS, which means that the memory performance of the GeForce 210 1GB is marginally better than the GeForce 8400 GS.
Both the GeForce 8400 GS and the GeForce 210 1GB have 16 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the . Knowing that the shader performance of the GeForce 8400 GS is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.
The GeForce 210 1GB transistor size technology is 40 nm (nanometers) smaller than the GeForce 8400 GS. This means that the GeForce 210 1GB is expected to run much cooler and achieve higher clock frequencies than the GeForce 8400 GS. As they exhibit similar graphical performance, the GeForce 210 1GB should consume less power than the GeForce 8400 GS.
The GeForce 8400 GS requires 18 Watts to run and the GeForce 210 1GB requires 31 Watts. We would recommend a PSU with at least 300 Watts for the GeForce 8400 GS and a PSU with at least 300 Watts for the GeForce 210 1GB. The GeForce 210 1GB requires 13 Watts more than the GeForce 8400 GS to run. The difference is not significant enough for the GeForce 210 1GB to have a noticeably larger impact on your yearly electricity bills than the GeForce 8400 GS.