In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 480X 4GB are significantly better than the Nvidia GeForce GTX 680 Galaxy Edition.

The RX 480X has a 40 MHz higher core clock speed and 128 more Texture Mapping Units than the GTX 680. This results in the RX 480X providing 152.3 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 480X has a 40 MHz higher core clock speed and 96 more Render Output Units than the GTX 680. This results in the RX 480X providing 111.7 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 480X was released over three years more recently than the GTX 680, and so the RX 480X is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 680 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 Radeon RX 480X 4GB and the GeForce GTX 680 Galaxy Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GTX 680 has 192.3 GB/sec greater memory bandwidth than the RX 480X, which means that the memory performance of the GTX 680 is massively better than the RX 480X.

The Radeon RX 480X 4GB has 4096 Shader Processing Units and the GeForce GTX 680 Galaxy Edition has 1536. However, the actual shader performance of the RX 480X is 5325 and the actual shader performance of the GTX 680 is 1806. The RX 480X having 3519 better shader performance and an altogether better performance when taking into account other relevant data means that the RX 480X delivers a significantly smoother and more efficient experience when processing graphical data than the GTX 680.

The RX 480X transistor size technology is 14 nm (nanometers) smaller than the GTX 680. This means that the RX 480X is expected to run slightly cooler and achieve higher clock frequencies than the GTX 680.

The Radeon RX 480X 4GB requires 175 Watts to run and the GeForce GTX 680 Galaxy Edition requires 195 Watts. We would recommend a PSU with at least 500 Watts for the RX 480X and a PSU with at least 550 Watts for the GTX 680. The GTX 680 requires 20 Watts more than the RX 480X to run. The difference is not significant enough for the GTX 680 to have a noticeably larger impact on your yearly electricity bills than the RX 480X.