In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 920MX 2GB are very slightly better than the Nvidia GeForce GT 445M v2.

The GeForce 920MX 2GB has a 318 MHz higher core clock speed and the same number of Texture Mapping Units as the GT 445M. This results in the GeForce 920MX 2GB providing 7.6 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 GeForce 920MX 2GB has a 318 MHz higher core clock speed than the GT 445M, but the GT 445M has 8 more Render Output Units than the GeForce 920MX 2GB. As a result, the GT 445M exhibits a 2 GPixel/s better Pixel Fill Rate than the GeForce 920MX 2GB. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce 920MX 2GB was released over three years more recently than the GT 445M, and so the GeForce 920MX 2GB is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GT 445M when running the latest games.

The GeForce 920MX 2GB has 1024 MB more video memory than the GT 445M, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The GT 445M has 4 GB/sec greater memory bandwidth than the GeForce 920MX 2GB, which means that the memory performance of the GT 445M is marginally better than the GeForce 920MX 2GB.

The GeForce 920MX 2GB has 384 Shader Processing Units and the GeForce GT 445M v2 has 144. However, the actual shader performance of the GeForce 920MX 2GB is 460 and the actual shader performance of the GT 445M is 164. The GeForce 920MX 2GB having 296 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 920MX 2GB delivers a marginally smoother and more efficient experience when processing graphical data than the GT 445M.

The GeForce 920MX 2GB transistor size technology is 12 nm (nanometers) smaller than the GT 445M. This means that the GeForce 920MX 2GB is expected to run slightly cooler and achieve higher clock frequencies than the GT 445M. While they exhibit similar graphical performance, the GeForce 920MX 2GB should consume less power than the GT 445M.

The GeForce 920MX 2GB requires 25 Watts to run and the GeForce GT 445M v2 requires 35 Watts. The GT 445M requires 10 Watts more than the GeForce 920MX 2GB to run. The difference is not significant enough for the GT 445M to have a noticeably larger impact on your yearly electricity bills than the GeForce 920MX 2GB.