In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 860M 2GB are significantly better than the AMD Radeon R9 M275.
The Radeon R9 M275 has no core clock speed set, so any comparison between Texture and Pixel Fill Rates is not currently possible.
The GTX 860M was released less than a year after the Radeon R9 M275, and so they are likely to have similar driver support for optimizing performance when running the latest games.
The GeForce GTX 860M 2GB and the Radeon R9 M275 have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.
The GTX 860M has 16 GB/sec greater memory bandwidth than the Radeon R9 M275, which means that the memory performance of the GTX 860M is slightly better than the Radeon R9 M275.
Both the GeForce GTX 860M 2GB and the Radeon R9 M275 have 640 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the . Knowing that the shader performance of the GTX 860M is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.
The GeForce GTX 860M 2GB requires 50 Watts to run and the Radeon R9 M275 requires 50 Watts. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.