In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 460 4GB are marginally better than the AMD Radeon RX 460 2GB.

The RX 460 and the RX 460 have both the same core clock speed and the same Texture Fill Rate. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The RX 460 and the RX 460 have both the same core clock speed and the same Pixel Fill Rate. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

Both the Radeon RX 460 2GB and the Radeon RX 460 4GB were released at the same time, so are likely to be quite similar.

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 460 has 2048 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 460 also has superior memory performance overall.

The memory bandwidth of the Radeon RX 460 2GB and the Radeon RX 460 4GB are the same, which means the RX 460 and the RX 460 have equal limitations when it comes to graphical data transfer.

Both the Radeon RX 460 2GB and the Radeon RX 460 4GB have 896 Shader Processing Units. The two GPUs are based on different architectures, but deliver an equivalent shader performance. To compare, we must continue to look at the memory bandwidth, Texture and Pixel Rates. In this case, the two GPUs have extremely similar stats, so any gaming performance difference would most likely be negligible.

The Radeon RX 460 2GB requires 75 Watts to run and the Radeon RX 460 4GB requires 75 Watts. We would recommend a PSU with at least 350 Watts for the RX 460 and a PSU with at least 350 Watts for the RX 460. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.