GeForce GTX 580 vs Radeon RX 560

Intro

Compare those specs to the Radeon RX 560, which has a core clock frequency of 1175 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 128-bit memory bus, and uses a 14 nm design. It is comprised of 1024 SPUs, 64 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
GeForce GTX 580		244 Watts
	Difference: 164 Watts (205%)

Memory Bandwidth

In theory, the GeForce GTX 580 should be quite a bit faster than the Radeon RX 560 overall. (explain)

GeForce GTX 580		192384 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 77696 (68%)

Texel Rate

The Radeon RX 560 should be much (approximately 52%) faster with regards to texture filtering than the GeForce GTX 580. (explain)

Radeon RX 560		75200 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 25792 (52%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 580 is a better choice, by a large margin. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 18256 (97%)

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 largest amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.