In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 6150 SE 256MB are noticeably better than the Nvidia Vanta LT.

The 6150 SE was released over three years more recently than the Vanta LT, and so the 6150 SE is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the Vanta LT 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 6150 SE has 240 MB more video memory than the Vanta LT, so is likely to be slightly better at displaying game textures at higher resolutions. This is supported by the fact that the 6150 SE also has superior memory performance overall.

The Vanta LT has 800 GB/sec greater memory bandwidth than the 6150 SE, which means that the memory performance of the Vanta LT is massively better than the 6150 SE.

Both the Vanta LT and the GeForce 6150 SE 256MB have 2 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the 6150 SE is 1 and by the Vanta LT is 1. Knowing that the shader performance of the 6150 SE is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.