In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 M275 are significantly better than the Nvidia GeForce GT 445M v2.

The Radeon R9 M275 has no core clock speed set, so any comparison between Texture and Pixel Fill Rates is not currently possible.

The Radeon R9 M275 was released over three years more recently than the GT 445M, and so the Radeon R9 M275 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 Radeon R9 M275 has 1024 MB more video memory than the GT 445M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the Radeon R9 M275 also has superior memory performance overall.

The Radeon R9 M275 has 24 GB/sec greater memory bandwidth than the GT 445M, which means that the memory performance of the Radeon R9 M275 is slightly better than the GT 445M.

The GeForce GT 445M v2 has 144 Shader Processing Units and the Radeon R9 M275 has 640. However, the actual shader performance of the GT 445M is 164 and the actual shader performance of the Radeon R9 M275 is 0. The GT 445M having 164 better shader performance is not particularly notable, as altogether the Radeon R9 M275 performs better when taking into account other relevant data.

The Radeon R9 M275 transistor size technology is 12 nm (nanometers) smaller than the GT 445M. This means that the Radeon R9 M275 is expected to run slightly cooler and achieve higher clock frequencies than the GT 445M.

The GeForce GT 445M v2 requires 35 Watts to run and the Radeon R9 M275 requires 50 Watts. The Radeon R9 M275 requires 15 Watts more than the GT 445M to run. The difference is not significant enough for the Radeon R9 M275 to have a noticeably larger impact on your yearly electricity bills than the GT 445M.