GeForce GTX 1080 vs Radeon RX 560

Intro

Compare those specifications to the Radeon RX 560, which uses a 14 nm design. AMD has set the core frequency at 1175 MHz. The GDDR5 memory runs at a speed of 1750 MHz on this specific card. It features 1024 SPUs along with 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 1080		180 Watts
	Difference: 100 Watts (125%)

Memory Bandwidth

In theory, the GeForce GTX 1080 will be 186% quicker than the Radeon RX 560 overall, due to its higher bandwidth. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 212992 (186%)

Texel Rate

The GeForce GTX 1080 is quite a bit (about 242%) more effective at texture filtering than the Radeon RX 560. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon RX 560		75200 Mtexels/sec
	Difference: 181920 (242%)

Pixel Rate

The GeForce GTX 1080 is a lot (about 447%) more effective at FSAA than the Radeon RX 560, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 84048 (447%)

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 largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high 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 texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.