In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX Vega 64 Air 8GB are massively better than the AMD Radeon RX 460 2GB.

The RX Vega has a 157 MHz higher core clock speed and 200 more Texture Mapping Units than the RX 460. This results in the RX Vega providing 258.2 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 RX Vega has a 157 MHz higher core clock speed and 48 more Render Output Units than the RX 460. This results in the RX Vega providing 62.4 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 Vega was released less than a year after the RX 460, 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 RX Vega has 6144 MB more video memory than the RX 460, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the RX Vega also has superior memory performance overall.

The RX Vega has 256 GB/sec greater memory bandwidth than the RX 460, which means that the memory performance of the RX Vega is massively better than the RX 460.

The Radeon RX Vega 64 Air 8GB has 4096 Shader Processing Units and the Radeon RX 460 2GB has 896. However, the actual shader performance of the RX Vega is 4116 and the actual shader performance of the RX 460 is 1075. The RX Vega having 3041 better shader performance and an altogether better performance when taking into account other relevant data means that the RX Vega delivers a massively smoother and more efficient experience when processing graphical data than the RX 460.

The Radeon RX Vega 64 Air 8GB requires 295 Watts to run and the Radeon RX 460 2GB requires 75 Watts. We would recommend a PSU with at least 600 Watts for the RX Vega and a PSU with at least 350 Watts for the RX 460. The RX Vega requires 220 Watts more than the RX 460 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 RX 460.