In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 9300 GE are massively better than the Nvidia GeForce 6150 SE 256MB.

The GeForce 9300 GE was released over a year more recently than the 6150 SE, and so the GeForce 9300 GE is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the 6150 SE.

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 9300 GE has 256 MB more video memory than the 6150 SE, so is likely to be slightly better at displaying game textures at higher resolutions. This is supported by the fact that the GeForce 9300 GE also has superior memory performance overall.

The GeForce 9300 GE has 8 GB/sec greater memory bandwidth than the 6150 SE, which means that the memory performance of the GeForce 9300 GE is marginally better than the 6150 SE.

The GeForce 6150 SE 256MB has 2 Shader Processing Units and the GeForce 9300 GE has 8. However, the actual shader performance of the 6150 SE is 1 and the actual shader performance of the GeForce 9300 GE is 4. The GeForce 9300 GE having 3 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 9300 GE delivers a marginally smoother and more efficient experience when processing graphical data than the 6150 SE.

We would recommend a PSU with at least 300 Watts for the GeForce 9300 GE, but we do not have a recommended PSU wattage for the 6150 SE.