In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 390X XFX Double Dissipation Black 8GB Edition are massively better than the AMD Radeon R7 360X.

The Radeon R7 360X has a 10 MHz higher core clock speed than the R9 390X, but the R9 390X has 120 more Texture Mapping Units than the Radeon R7 360X. As a result, the R9 390X exhibits a 130.2 GTexel/s better Texture Fill Rate than the Radeon R7 360X. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon R7 360X has a 10 MHz higher core clock speed than the R9 390X, but the R9 390X has 48 more Render Output Units than the Radeon R7 360X. As a result, the R9 390X exhibits a 52.2 GPixel/s better Pixel Fill Rate than the Radeon R7 360X. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The Radeon R7 360X was released less than a year after the R9 390X, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The R9 390X has 6144 MB more video memory than the Radeon R7 360X, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the R9 390X also has superior memory performance overall.

The R9 390X has 280 GB/sec greater memory bandwidth than the Radeon R7 360X, which means that the memory performance of the R9 390X is massively better than the Radeon R7 360X.

The Radeon R7 360X has 896 Shader Processing Units and the Radeon R9 390X XFX Double Dissipation Black 8GB Edition has 2816. However, the actual shader performance of the Radeon R7 360X is 876 and the actual shader performance of the R9 390X is 2609. The R9 390X having 1733 better shader performance and an altogether better performance when taking into account other relevant data means that the R9 390X delivers a massively smoother and more efficient experience when processing graphical data than the Radeon R7 360X.

The Radeon R7 360X requires 120 Watts to run and the Radeon R9 390X XFX Double Dissipation Black 8GB Edition requires 300 Watts. We would recommend a PSU with at least 500 Watts for the Radeon R7 360X and a PSU with at least 750 Watts for the R9 390X. The R9 390X requires 180 Watts more than the Radeon R7 360X to run. The difference is significant enough that the R9 390X may have an adverse affect on your yearly electricity bills in comparison to the Radeon R7 360X.