In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX Titan Zotac AMP! Edition are noticeably better than the Nvidia GeForce GTX 770 Zotac AMP! Edition.

The GTX 770 has a 248 MHz higher core clock speed than the GTX Titan, but the GTX Titan has 96 more Texture Mapping Units than the GTX 770. As a result, the GTX Titan exhibits a 54.8 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 248 MHz higher core clock speed than the GTX Titan, but the GTX Titan has 16 more Render Output Units than the GTX 770. As a result, the GTX Titan exhibits a 6.5 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 GTX 770 was released less than a year after the GTX Titan, and so they are likely to have similar driver support for optimizing performance when running the latest games.

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 Titan has 4096 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 Titan also has superior memory performance overall.

The GTX Titan has 86.8 GB/sec greater memory bandwidth than the GTX 770, which means that the memory performance of the GTX Titan is much better than the GTX 770.

The GeForce GTX 770 Zotac AMP! Edition has 1536 Shader Processing Units and the GeForce GTX Titan Zotac AMP! Edition has 2688. However, the actual shader performance of the GTX 770 is 1846 and the actual shader performance of the GTX Titan is 2564. The GTX Titan having 718 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX Titan delivers a massively smoother and more efficient experience when processing graphical data than the GTX 770.

We would recommend a PSU with at least 600 Watts for the GTX 770.