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Radeon HD 6870 vs Radeon RX 560

Intro

The Radeon HD 6870 makes use of a 40 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory runs at a speed of 1050 MHz on this particular card. It features 1120 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon RX 560, which uses a 14 nm design. AMD has clocked the core frequency at 1175 MHz. The GDDR5 RAM is set to run at a frequency of 7000 MHz on this specific card. It features 1024 SPUs along with 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 HD 6870 151 Watts
Difference: 71 Watts (89%)

Memory Bandwidth

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

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

Texel Rate

The Radeon RX 560 will be quite a bit (approximately 49%) better at texture filtering than the Radeon HD 6870. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6870 is superior to the Radeon RX 560, and very much so. (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

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Radeon HD 6870

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.

Specifications

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Model Radeon HD 6870 Radeon RX 560
Manufacturer AMD AMD
Year October 2010 May 2017
Code Name Barts XT Baffin
Memory 1024 MB 4096 MB
Core Speed 900 MHz 1175 MHz
Memory Speed 4200 MHz 28000 MHz
Power (Max TDP) 151 watts 80 watts
Bandwidth 134400 MB/sec 114688 MB/sec
Texel Rate 50400 Mtexels/sec 75200 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 18800 Mpixels/sec
Unified Shaders 1120 1024
Texture Mapping Units 56 64
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 14 nm
Transistors 1700 million 3000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6870

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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