Radeon R9 280X vs Radeon RX 560

Intro

Compare those specifications to the Radeon RX 560, which features a clock frequency of 1175 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 128-bit bus, and uses a 14 nm design. It is made up of 1024 SPUs, 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
Radeon R9 280X		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X is 151% quicker than the Radeon RX 560 in general, because of its higher data rate. (explain)

Radeon R9 280X		288000 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 173312 (151%)

Texel Rate

The Radeon R9 280X should be quite a bit (more or less 45%) better at anisotropic filtering than the Radeon RX 560. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon RX 560		75200 Mtexels/sec
	Difference: 33600 (45%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 280X is superior to the Radeon RX 560, by far. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 8400 (45%)

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 megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at 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 the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.