GeForce GTX 1070 Ti vs Radeon R5 M255

Intro

Compare those specifications to the Radeon R5 M255, which has GPU core speed of 940 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also is comprised of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 1070 Ti, in theory, should perform quite a bit faster than the Radeon R5 M255 overall. (explain)

GeForce GTX 1070 Ti		262144 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 246144 (1538%)

Texel Rate

The GeForce GTX 1070 Ti is a lot (approximately 1199%) more effective at texture filtering than the Radeon R5 M255. (explain)

GeForce GTX 1070 Ti		244264 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 225464 (1199%)

Pixel Rate

The GeForce GTX 1070 Ti will be much (about 1268%) better at anti-aliasing than the Radeon R5 M255, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 1070 Ti		102848 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 95328 (1268%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.