In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 780 Ti MSI Gaming 3GB Edition are noticeably better than the AMD Radeon R9 270X Crossfire.

The GTX 780 Ti has a 20 MHz higher core clock speed and 80 more Texture Mapping Units than the R9 270X. This results in the GTX 780 Ti providing 84.8 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 20 MHz higher core clock speed than the R9 270X, but the R9 270X has 16 more Render Output Units than the GTX 780 Ti. As a result, the R9 270X exhibits a 15 GPixel/s better Pixel Fill Rate than the GTX 780 Ti. 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 less than a year after the R9 270X, 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 R9 270X has 1024 MB more video memory than the GTX 780 Ti, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 270X also has superior memory performance overall.

The R9 270X has 22.4 GB/sec greater memory bandwidth than the GTX 780 Ti, which means that the memory performance of the R9 270X is slightly better than the GTX 780 Ti.

The Radeon R9 270X Crossfire has 2560 Shader Processing Units and the GeForce GTX 780 Ti MSI Gaming 3GB Edition has 2880. However, the actual shader performance of the R9 270X is 2285 and the actual shader performance of the GTX 780 Ti is 3125. The GTX 780 Ti having 840 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 780 Ti delivers a significantly smoother and more efficient experience when processing graphical data than the R9 270X.

The Radeon R9 270X Crossfire requires 360 Watts to run and the GeForce GTX 780 Ti MSI Gaming 3GB Edition requires 250 Watts. We would recommend a PSU with at least 750 Watts for the R9 270X and a PSU with at least 600 Watts for the GTX 780 Ti. The R9 270X requires 110 Watts more than the GTX 780 Ti to run. The difference is significant enough that the R9 270X may have an adverse affect on your yearly electricity bills in comparison to the GTX 780 Ti.