In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 770 Zotac AMP! Edition are significantly better than the Nvidia GeForce GTX 650 Ti Boost Palit 1GB Edition.

The GTX 770 has a 170 MHz higher core clock speed and 64 more Texture Mapping Units than the GTX 650 Ti. This results in the GTX 770 providing 84.5 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 770 has a 170 MHz higher core clock speed and 8 more Render Output Units than the GTX 650 Ti. This results in the GTX 770 providing 13.3 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 770 was released less than a year after the GTX 650 Ti, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GTX 770 has 1024 MB more video memory than the GTX 650 Ti, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 770 also has superior memory performance overall.

The GTX 770 has 110.1 GB/sec greater memory bandwidth than the GTX 650 Ti, which means that the memory performance of the GTX 770 is massively better than the GTX 650 Ti.

The GeForce GTX 650 Ti Boost Palit 1GB Edition has 768 Shader Processing Units and the GeForce GTX 770 Zotac AMP! Edition has 1536. However, the actual shader performance of the GTX 650 Ti is 793 and the actual shader performance of the GTX 770 is 1846. The GTX 770 having 1053 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 770 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 650 Ti.

The GeForce GTX 650 Ti Boost Palit 1GB Edition requires 134 Watts to run but there is no entry for the GeForce GTX 770 Zotac AMP! Edition. We would recommend a PSU with at least 450 Watts for the GTX 650 Ti and a PSU with at least 600 Watts for the GTX 770. The GTX 770 has been recommended a PSU with 150 Watts more than the GTX 650 Ti. The difference is significant enough that the GTX 770 may have an adverse affect on your yearly electricity bills in comparison to the GTX 650 Ti.