In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 780 Ti EVGA Classified Kingpin Edition are significantly better than the AMD Radeon HD 7970 GHz Vapor-X 3GB.

The GTX 780 Ti has a 72 MHz higher core clock speed and 112 more Texture Mapping Units than the HD 7970. This results in the GTX 780 Ti providing 129.3 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 780 Ti has a 72 MHz higher core clock speed and 16 more Render Output Units than the HD 7970. This results in the GTX 780 Ti providing 19.5 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 780 Ti was released over a year more recently than the HD 7970, and so the GTX 780 Ti is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 7970.

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 GeForce GTX 780 Ti EVGA Classified Kingpin Edition and the Radeon HD 7970 GHz Vapor-X 3GB have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GTX 780 Ti has 48 GB/sec greater memory bandwidth than the HD 7970, which means that the memory performance of the GTX 780 Ti is noticeably better than the HD 7970.

The GeForce GTX 780 Ti EVGA Classified Kingpin Edition has 2880 Shader Processing Units and the Radeon HD 7970 GHz Vapor-X 3GB has 2048. However, the actual shader performance of the GTX 780 Ti is 3275 and the actual shader performance of the HD 7970 is 1915. The GTX 780 Ti having 1360 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 780 Ti delivers a massively smoother and more efficient experience when processing graphical data than the HD 7970.

The GeForce GTX 780 Ti EVGA Classified Kingpin Edition requires 250 Watts to run but there is no entry for the Radeon HD 7970 GHz Vapor-X 3GB. We would recommend a PSU with at least 600 Watts for the GTX 780 Ti and a PSU with at least 500 Watts for the HD 7970. The GTX 780 Ti has been recommended a PSU with 100 Watts more than the HD 7970. The difference is significant enough that the GTX 780 Ti may have an adverse affect on your yearly electricity bills in comparison to the HD 7970.