In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 960 MSI Gaming 4GB Edition SLI are noticeably better than the Nvidia GeForce GTX 770 Zotac AMP! Edition.

The GTX 960 has a 91 MHz higher core clock speed and the same number of Texture Mapping Units as the GTX 770. This results in the GTX 960 providing 11.6 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 960 has a 91 MHz higher core clock speed and 32 more Render Output Units than the GTX 770. This results in the GTX 960 providing 42.6 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 960 was released over a year more recently than the GTX 770, and so the GTX 960 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 GTX 960 has 6144 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 GTX 960 also has superior memory performance overall.

The GTX 770 has 6 GB/sec greater memory bandwidth than the GTX 960, which means that the memory performance of the GTX 770 is marginally better than the GTX 960.

The GeForce GTX 960 MSI Gaming 4GB Edition SLI has 2048 Shader Processing Units and the GeForce GTX 770 Zotac AMP! Edition has 1536. However, the actual shader performance of the GTX 960 is 3605 and the actual shader performance of the GTX 770 is 1846. The GTX 960 having 1759 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 960 delivers a significantly smoother and more efficient experience when processing graphical data than the GTX 770.

The GeForce GTX 960 MSI Gaming 4GB Edition SLI requires 240 Watts to run but there is no entry for the GeForce GTX 770 Zotac AMP! Edition. We would recommend a PSU with at least 500 Watts for the GTX 960 and a PSU with at least 600 Watts for the GTX 770. The GTX 770 has been recommended a PSU with 100 Watts more than the GTX 960. The difference is significant enough that the GTX 770 may have an adverse affect on your yearly electricity bills in comparison to the GTX 960.