In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 770 MSI Lightning Edition are very slightly better than the AMD FirePro S9150.

The GTX 770 has a 250 MHz higher core clock speed than the FirePro S9150, but the FirePro S9150 has 48 more Texture Mapping Units than the GTX 770. As a result, the FirePro S9150 exhibits a 11.2 GTexel/s better Texture Fill Rate than the GTX 770. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 770 has a 250 MHz higher core clock speed than the FirePro S9150, but the FirePro S9150 has 32 more Render Output Units than the GTX 770. As a result, the FirePro S9150 exhibits a 20.8 GPixel/s better Pixel Fill Rate than the GTX 770. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The FirePro S9150 was released over a year more recently than the GTX 770, and so the FirePro S9150 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GTX 770.

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 14336 MB more video memory than the GTX 770, 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 95.6 GB/sec greater memory bandwidth than the GTX 770, which means that the memory performance of the FirePro S9150 is massively better than the GTX 770.

The FirePro S9150 has 2816 Shader Processing Units and the GeForce GTX 770 MSI Lightning Edition has 1536. However, the actual shader performance of the FirePro S9150 is 2534 and the actual shader performance of the GTX 770 is 1846. The FirePro S9150 having 688 better shader performance and an altogether better performance when taking into account other relevant data means that the FirePro S9150 delivers a significantly smoother and more efficient experience when processing graphical data than the GTX 770.

The FirePro S9150 requires 235 Watts to run and the GeForce GTX 770 MSI Lightning Edition requires 280 Watts. The GTX 770 requires 45 Watts more than the FirePro S9150 to run. The difference is significant enough that the GTX 770 may have a slight adverse affect on your yearly electricity bills in comparison to the FirePro S9150.