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Radeon R9 285 vs Radeon RX 560

Intro

The Radeon R9 285 comes with a clock speed of 918 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Compare all of that to the Radeon RX 560, which comes with a clock frequency of 1175 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit bus, and makes use of a 14 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560 80 Watts
Radeon R9 285 190 Watts
Difference: 110 Watts (138%)

Memory Bandwidth

In theory, the Radeon R9 285 should perform much faster than the Radeon RX 560 in general. (explain)

Radeon R9 285 176000 MB/sec
Radeon RX 560 114688 MB/sec
Difference: 61312 (53%)

Texel Rate

The Radeon R9 285 is much (approximately 37%) more effective at anisotropic filtering than the Radeon RX 560. (explain)

Radeon R9 285 102816 Mtexels/sec
Radeon RX 560 75200 Mtexels/sec
Difference: 27616 (37%)

Pixel Rate

The Radeon R9 285 is a lot (about 56%) better at FSAA than the Radeon RX 560, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 285 29376 Mpixels/sec
Radeon RX 560 18800 Mpixels/sec
Difference: 10576 (56%)

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

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Radeon R9 285

Amazon.com

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Radeon RX 560

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 285 Radeon RX 560
Manufacturer AMD AMD
Year September 2014 May 2017
Code Name Tonga PRO Baffin
Memory 2048 MB 4096 MB
Core Speed 918 MHz 1175 MHz
Memory Speed 5500 MHz 7000 MHz
Power (Max TDP) 190 watts 80 watts
Bandwidth 176000 MB/sec 114688 MB/sec
Texel Rate 102816 Mtexels/sec 75200 Mtexels/sec
Pixel Rate 29376 Mpixels/sec 18800 Mpixels/sec
Unified Shaders 1792 1024
Texture Mapping Units 112 64
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 14 nm
Transistors 5000 million 3000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.4 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 are applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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

Display Prices

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Radeon R9 285

Amazon.com

Check prices at:

Radeon RX 560

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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