In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 550M 2GB are marginally better than the AMD Radeon HD 7670M 2GB.

The GT 550M has a 140 MHz higher core clock speed than the HD 7670M, but the HD 7670M has 8 more Texture Mapping Units than the GT 550M. As a result, the HD 7670M exhibits a 2.6 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 140 MHz higher core clock speed than the HD 7670M, but the HD 7670M has 12 more Render Output Units than the GT 550M. As a result, the HD 7670M exhibits a 6.6 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 HD 7670M was released over a year more recently than the GT 550M, and so the HD 7670M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the GT 550M.

The Radeon HD 7670M 2GB and the GeForce GT 550M 2GB have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The memory bandwidth of the Radeon HD 7670M 2GB and the GeForce GT 550M 2GB are the same, which means the HD 7670M and the GT 550M have equal limitations when it comes to graphical data transfer.

The Radeon HD 7670M 2GB has 480 Shader Processing Units and the GeForce GT 550M 2GB has 96. However, the actual shader performance of the HD 7670M is 144 and the actual shader performance of the GT 550M is 142. The HD 7670M having 2 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7670M delivers a marginally smoother and more efficient experience when processing graphical data than the GT 550M.

The Radeon HD 7670M 2GB requires 20 Watts to run and the GeForce GT 550M 2GB requires 35 Watts. The GT 550M requires 15 Watts more than the HD 7670M to run. The difference is not significant enough for the GT 550M to have a noticeably larger impact on your yearly electricity bills than the HD 7670M.