In terms of overall gaming performance, the graphical capabilities of the Intel GMA 3100 are massively better than the Nvidia GeForce 6150 LE.

The GMA 3100 was released over a year more recently than the GeForce 6150 LE, and so the GMA 3100 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GeForce 6150 LE.

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 GMA 3100 has 256 MB video memory, but the GeForce 6150 LE does not have an entry, so the two GPUs cannot be reliably compared in this area.

The GeForce 6150 LE has 2 Shader Processing Units and the GMA 3100 has 128. However, the actual shader performance of the GeForce 6150 LE is 1 and the actual shader performance of the GMA 3100 is 51. The GMA 3100 having 50 better shader performance and an altogether better performance when taking into account other relevant data means that the GMA 3100 delivers a marginally smoother and more efficient experience when processing graphical data than the GeForce 6150 LE.

The GMA 3100 requires 17 Watts to run but there is no entry for the GeForce 6150 LE.