In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 950 2GB SLI are noticeably better than the AMD FirePro S9150.

The GTX 950 has a 124 MHz higher core clock speed than the FirePro S9150, but the FirePro S9150 has 80 more Texture Mapping Units than the GTX 950. As a result, the FirePro S9150 exhibits a 60.1 GTexel/s better Texture Fill Rate than the GTX 950. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 950 has a 124 MHz higher core clock speed than the FirePro S9150 and the same number of Render Output Units. This results in the GTX 950 providing 7.9 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 GTX 950 was released over a year more recently than the FirePro S9150, and so the GTX 950 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the FirePro S9150.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The FirePro S9150 has 12288 MB more video memory than the GTX 950, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the FirePro S9150 also has superior memory performance overall.

The FirePro S9150 has 108.4 GB/sec greater memory bandwidth than the GTX 950, which means that the memory performance of the FirePro S9150 is massively better than the GTX 950.

The GeForce GTX 950 2GB SLI has 1536 Shader Processing Units and the FirePro S9150 has 2816. However, the actual shader performance of the GTX 950 is 2463 and the actual shader performance of the FirePro S9150 is 2534. The FirePro S9150 having 71 better shader performance and an altogether better performance when taking into account other relevant data means that the FirePro S9150 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 950.

The GeForce GTX 950 2GB SLI requires 180 Watts to run and the FirePro S9150 requires 235 Watts. We would recommend a PSU with at least 450 Watts for the GTX 950. The FirePro S9150 requires 55 Watts more than the GTX 950 to run. The difference is significant enough that the FirePro S9150 may have an adverse affect on your yearly electricity bills in comparison to the GTX 950.