GeForce GTX 980 vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which comes with a GPU core clock speed of 1175 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is comprised of 1024 SPUs, 64 TAUs, 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 980		165 Watts
	Difference: 85 Watts (106%)

Memory Bandwidth

Theoretically, the GeForce GTX 980 should perform much faster than the Radeon RX 560 in general. (explain)

GeForce GTX 980		224000 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 109312 (95%)

Texel Rate

The GeForce GTX 980 will be quite a bit (approximately 92%) more effective at AF than the Radeon RX 560. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon RX 560		75200 Mtexels/sec
	Difference: 68928 (92%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 980 is a better choice, by far. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 53264 (283%)

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 maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.