Radeon HD 6870 vs Radeon RX 560

Intro

Compare all of that to the Radeon RX 560, which uses a 14 nm design. AMD has clocked the core speed at 1175 MHz. The GDDR5 memory runs at a frequency of 1750 MHz on this particular model. It features 1024 SPUs as well as 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560		80 Watts
Radeon HD 6870		151 Watts
	Difference: 71 Watts (89%)

Memory Bandwidth

The Radeon HD 6870 should in theory perform a little bit faster than the Radeon RX 560 overall. (explain)

Radeon HD 6870		134400 MB/sec
Radeon RX 560		114688 MB/sec
	Difference: 19712 (17%)

Texel Rate

The Radeon RX 560 should be much (about 49%) better at anisotropic filtering than the Radeon HD 6870. (explain)

Radeon RX 560		75200 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 24800 (49%)

Pixel Rate

The Radeon HD 6870 should be a lot (more or less 53%) faster with regards to full screen anti-aliasing than the Radeon RX 560, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon RX 560		18800 Mpixels/sec
	Difference: 10000 (53%)

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 information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.