In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX Titan X EVGA Superclocked 12GB Edition are significantly better than the AMD Radeon R9 270X Crossfire.

The GTX Titan has a 127 MHz higher core clock speed and 32 more Texture Mapping Units than the R9 270X. This results in the GTX Titan providing 56.4 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 Titan has a 127 MHz higher core clock speed and 32 more Render Output Units than the R9 270X. This results in the GTX Titan providing 44.2 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 Titan was released over a year more recently than the R9 270X, and so the GTX Titan is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the R9 270X.

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 8192 MB more video memory than the R9 270X, 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 R9 270X has 21.8 GB/sec greater memory bandwidth than the GTX Titan, which means that the memory performance of the R9 270X is slightly better than the GTX Titan.

The GeForce GTX Titan X EVGA Superclocked 12GB Edition has 3072 Shader Processing Units and the Radeon R9 270X Crossfire has 2560. However, the actual shader performance of the GTX Titan is 5043 and the actual shader performance of the R9 270X is 2285. The GTX Titan having 2758 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 R9 270X.

The GeForce GTX Titan X EVGA Superclocked 12GB Edition requires 250 Watts to run and the Radeon R9 270X Crossfire requires 360 Watts. We would recommend a PSU with at least 600 Watts for the GTX Titan and a PSU with at least 750 Watts for the R9 270X. The R9 270X requires 110 Watts more than the GTX Titan 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 Titan.