In terms of overall gaming performance, the graphical capabilities of the AMD Radeon RX 480X 8GB are significantly better than the Nvidia GeForce GTX 680 Galaxy Edition.

The RX 480X has a 140 MHz higher core clock speed and the same number of Texture Mapping Units as the GTX 680. This results in the RX 480X providing 17.9 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 140 MHz higher core clock speed and 32 more Render Output Units than the GTX 680. This results in the RX 480X providing 44.5 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 RX 480X has 4096 MB more video memory than the GTX 680, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the GTX 680 has superior memory performance.

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 8GB has 2048 Shader Processing Units and the GeForce GTX 680 Galaxy Edition has 1536. However, the actual shader performance of the RX 480X is 2560 and the actual shader performance of the GTX 680 is 1806. The RX 480X having 754 better shader performance is not particularly notable, as altogether the GTX 680 performs better when taking into account other relevant data.

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 8GB requires 150 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 45 Watts more than the RX 480X to run. The difference is significant enough that the GTX 680 may have a slight adverse affect on your yearly electricity bills in comparison to the RX 480X.