In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 470M are significantly better than the Nvidia GeForce 920M 2GB.

The GeForce 920M 2GB has a 40 MHz higher core clock speed than the GeForce GTX 470M, but the GeForce GTX 470M has 16 more Texture Mapping Units than the GeForce 920M 2GB. As a result, the GeForce GTX 470M exhibits a 7.3 GTexel/s better Texture Fill Rate than the GeForce 920M 2GB. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce 920M 2GB has a 40 MHz higher core clock speed than the GeForce GTX 470M, but the GeForce GTX 470M has 16 more Render Output Units than the GeForce 920M 2GB. As a result, the GeForce GTX 470M exhibits a 8.2 GPixel/s better Pixel Fill Rate than the GeForce 920M 2GB. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce 920M 2GB was released over three years more recently than the GeForce GTX 470M, and so the GeForce 920M 2GB is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce GTX 470M when running the latest games.

The GeForce 920M 2GB has 512 MB more video memory than the GeForce GTX 470M, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the GeForce GTX 470M has superior memory performance.

The GeForce GTX 470M has 45.6 GB/sec greater memory bandwidth than the GeForce 920M 2GB, which means that the memory performance of the GeForce GTX 470M is noticeably better than the GeForce 920M 2GB.

The GeForce 920M 2GB has 384 Shader Processing Units and the GeForce GTX 470M has 288. However, the actual shader performance of the GeForce 920M 2GB is 366 and the actual shader performance of the GeForce GTX 470M is 308. The GeForce 920M 2GB having 58 better shader performance is not particularly notable, as altogether the GeForce GTX 470M performs better when taking into account other relevant data.

The GeForce 920M 2GB transistor size technology is 12 nm (nanometers) smaller than the GeForce GTX 470M. This means that the GeForce 920M 2GB is expected to run slightly cooler and achieve higher clock frequencies than the GeForce GTX 470M.

The GeForce 920M 2GB requires 25 Watts to run and the GeForce GTX 470M requires 75 Watts. The GeForce GTX 470M requires 50 Watts more than the GeForce 920M 2GB to run. The difference is significant enough that the GeForce GTX 470M may have a slight adverse affect on your yearly electricity bills in comparison to the GeForce 920M 2GB.