In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 460 SLI are massively better than the AMD Radeon HD 6570.

The GTX 460 has a 25 MHz higher core clock speed and 88 more Texture Mapping Units than the Radeon HD 6570. This results in the GTX 460 providing 60 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 GTX 460 has a 25 MHz higher core clock speed and 56 more Render Output Units than the Radeon HD 6570. This results in the GTX 460 providing 38 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 Radeon HD 6570 was released less than a year after the GTX 460, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GTX 460 has 1024 MB more video memory than the Radeon HD 6570, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 460 also has superior memory performance overall.

The GTX 460 has 166.4 GB/sec greater memory bandwidth than the Radeon HD 6570, which means that the memory performance of the GTX 460 is massively better than the Radeon HD 6570.

The Radeon HD 6570 has 480 Shader Processing Units and the GeForce GTX 460 SLI has 672. However, the actual shader performance of the Radeon HD 6570 is 156 and the actual shader performance of the GTX 460 is 907. The GTX 460 having 751 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 460 delivers a massively smoother and more efficient experience when processing graphical data than the Radeon HD 6570.

The Radeon HD 6570 requires 60 Watts to run and the GeForce GTX 460 SLI requires 380 Watts. We would recommend a PSU with at least 400 Watts for the Radeon HD 6570 and a PSU with at least 600 Watts for the GTX 460. The GTX 460 requires 320 Watts more than the Radeon HD 6570 to run. The difference is significant enough that the GTX 460 may have an adverse affect on your yearly electricity bills in comparison to the Radeon HD 6570.