In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 550M 2GB are significantly better than the AMD Mobility Radeon HD 560v.

The GT 550M has a 190 MHz higher core clock speed than the Radeon HD, but the Radeon HD has 16 more Texture Mapping Units than the GT 550M. As a result, the Radeon HD exhibits a 5.8 GTexel/s better Texture Fill Rate than the GT 550M. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 550M has a 190 MHz higher core clock speed than the Radeon HD, but the Radeon HD has 4 more Render Output Units than the GT 550M. As a result, the Radeon HD exhibits a 1.4 GPixel/s better Pixel Fill Rate than the GT 550M. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GT 550M was released less than a year after the Radeon HD, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GT 550M has 1024 MB more video memory than the Radeon HD, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GT 550M also has superior memory performance overall.

The GT 550M has 3.2 GB/sec greater memory bandwidth than the Radeon HD, which means that the memory performance of the GT 550M is marginally better than the Radeon HD.

The GeForce GT 550M 2GB has 96 Shader Processing Units and the Mobility Radeon HD 560v has 320. However, the actual shader performance of the GT 550M is 142 and the actual shader performance of the Radeon HD is 114. The GT 550M having 28 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 550M delivers a marginally smoother and more efficient experience when processing graphical data than the Radeon HD.

The GT 550M transistor size technology is 15 nm (nanometers) smaller than the Radeon HD. This means that the GT 550M is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD.

The GeForce GT 550M 2GB requires 35 Watts to run and the Mobility Radeon HD 560v requires 35 Watts. 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.