In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 1070 Zotac AMP! are massively better than the AMD Radeon RX 550 4GB.

The GTX 1070 has a 517 MHz higher core clock speed and 64 more Texture Mapping Units than the RX 550. This results in the GTX 1070 providing 131.8 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 1070 has a 517 MHz higher core clock speed and 48 more Render Output Units than the RX 550. This results in the GTX 1070 providing 85.4 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 RX 550 was released less than a year after the GTX 1070, 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 GTX 1070 has 4096 MB more video memory than the RX 550, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 1070 also has superior memory performance overall.

The GTX 1070 has 256.3 GB/sec greater memory bandwidth than the RX 550, which means that the memory performance of the GTX 1070 is massively better than the RX 550.

The Radeon RX 550 4GB has 896 Shader Processing Units and the GeForce GTX 1070 Zotac AMP! has 1920. However, the actual shader performance of the RX 550 is 1075 and the actual shader performance of the GTX 1070 is 4658. The GTX 1070 having 3583 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 1070 delivers a massively smoother and more efficient experience when processing graphical data than the RX 550.

The RX 550 transistor size technology is 2 nm (nanometers) smaller than the GTX 1070. This means that the RX 550 is expected to run very slightly cooler and achieve higher clock frequencies than the GTX 1070.

The Radeon RX 550 4GB requires 75 Watts to run and the GeForce GTX 1070 Zotac AMP! requires 220 Watts. We would recommend a PSU with at least 350 Watts for the RX 550 and a PSU with at least 500 Watts for the GTX 1070. The GTX 1070 requires 145 Watts more than the RX 550 to run. The difference is significant enough that the GTX 1070 may have an adverse affect on your yearly electricity bills in comparison to the RX 550.