In terms of overall gaming performance, the graphical capabilities of the Intel UHD Graphics 620 are significantly better than the Nvidia GeForce GT 550M 2GB.

The GT 550M has a 440 MHz higher core clock speed but 8 fewer Texture Mapping Units than the UHD Graphics 620. The lower TMU count doesn't matter, though, as altogether the GT 550M manages to provide 4.6 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 GT 550M has a 440 MHz higher core clock speed and 1 more Render Output Units than the UHD Graphics 620. This results in the GT 550M providing 2.1 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The UHD Graphics 620 was released over three years more recently than the GT 550M, and so the UHD Graphics 620 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GT 550M when running the latest games.

The GT 550M has 2048 MB video memory, but the UHD Graphics 620 does not have an entry, so the two GPUs cannot be reliably compared in this area.

The UHD Graphics 620 has 192 Shader Processing Units and the GeForce GT 550M 2GB has 96. However, the actual shader performance of the GT 550M is 142. The UHD Graphics 620 having 50 better shader performance is not particularly notable, as altogether the GT 550M performs better when taking into account other relevant data.

The UHD Graphics 620 transistor size technology is 26 nm (nanometers) smaller than the GT 550M. This means that the UHD Graphics 620 is expected to run slightly cooler and achieve higher clock frequencies than the GT 550M.

The UHD Graphics 620 requires 15 Watts to run and the GeForce GT 550M 2GB requires 35 Watts. The GT 550M requires 20 Watts more than the UHD Graphics 620 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 UHD Graphics 620.