In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX Vega 64 8GB are very slightly better than the Nvidia GeForce GTX 1070 Zotac AMP!.

The GTX 1070 has a 360 MHz higher core clock speed than the RX Vega, but the RX Vega has 136 more Texture Mapping Units than the GTX 1070. As a result, the RX Vega exhibits a 126.4 GTexel/s better Texture Fill Rate than the GTX 1070. 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 360 MHz higher core clock speed than the RX Vega and the same number of Render Output Units. This results in the GTX 1070 providing 23 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 Vega was released over a year more recently than the GTX 1070, and so the RX Vega is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GTX 1070.

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 Radeon RX Vega 64 8GB and the GeForce GTX 1070 Zotac AMP! have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GTX 1070 has 0.3 GB/sec greater memory bandwidth than the RX Vega, which means that the memory performance of the GTX 1070 is marginally better than the RX Vega.

The Radeon RX Vega 64 8GB has 4096 Shader Processing Units and the GeForce GTX 1070 Zotac AMP! has 1920. However, the actual shader performance of the RX Vega is 6332 and the actual shader performance of the GTX 1070 is 4658. The RX Vega having 1674 better shader performance and an altogether better performance when taking into account other relevant data means that the RX Vega delivers a significantly smoother and more efficient experience when processing graphical data than the GTX 1070.

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

The Radeon RX Vega 64 8GB requires 295 Watts to run and the GeForce GTX 1070 Zotac AMP! requires 220 Watts. We would recommend a PSU with at least 600 Watts for the RX Vega and a PSU with at least 500 Watts for the GTX 1070. The RX Vega requires 75 Watts more than the GTX 1070 to run. The difference is significant enough that the RX Vega may have an adverse affect on your yearly electricity bills in comparison to the GTX 1070.