GeForce GTX 880M vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which features a GPU core clock speed of 1175 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 1024 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
GeForce GTX 880M		130 Watts
	Difference: 50 Watts (63%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should theoretically be a bit better than the Radeon RX 560 in general. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 13312 (12%)

Texel Rate

The GeForce GTX 880M is quite a bit (about 62%) better at anisotropic filtering than the Radeon RX 560. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon RX 560		75200 Mtexels/sec
	Difference: 46912 (62%)

Pixel Rate

The GeForce GTX 880M should be quite a bit (more or less 62%) better at anti-aliasing than the Radeon RX 560, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 11728 (62%)

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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.