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Radeon HD 6850 vs Radeon RX 560

Intro

The Radeon HD 6850 has a GPU clock speed of 775 MHz, and the 1024 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also is comprised of 960 SPUs, 48 TAUs, and 32 ROPs.

Compare those specs to the Radeon RX 560, which makes use of a 14 nm design. AMD has clocked the core speed at 1175 MHz. The GDDR5 RAM runs at a speed of 7000 MHz on this card. It features 1024 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 560 80 Watts
Radeon HD 6850 127 Watts
Difference: 47 Watts (59%)

Memory Bandwidth

In theory, the Radeon HD 6850 should be 12% faster than the Radeon RX 560 overall, due to its higher data rate. (explain)

Radeon HD 6850 128000 MB/sec
Radeon RX 560 114688 MB/sec
Difference: 13312 (12%)

Texel Rate

The Radeon RX 560 is quite a bit (approximately 102%) faster with regards to texture filtering than the Radeon HD 6850. (explain)

Radeon RX 560 75200 Mtexels/sec
Radeon HD 6850 37200 Mtexels/sec
Difference: 38000 (102%)

Pixel Rate

The Radeon HD 6850 will be a lot (approximately 32%) faster with regards to AA than the Radeon RX 560, and will be able to handle higher resolutions better. (explain)

Radeon HD 6850 24800 Mpixels/sec
Radeon RX 560 18800 Mpixels/sec
Difference: 6000 (32%)

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 6850

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 6850 Radeon RX 560
Manufacturer AMD AMD
Year October 2010 May 2017
Code Name Barts Pro Baffin
Memory 1024 MB 4096 MB
Core Speed 775 MHz 1175 MHz
Memory Speed 4000 MHz 28000 MHz
Power (Max TDP) 127 watts 80 watts
Bandwidth 128000 MB/sec 114688 MB/sec
Texel Rate 37200 Mtexels/sec 75200 Mtexels/sec
Pixel Rate 24800 Mpixels/sec 18800 Mpixels/sec
Unified Shaders 960 1024
Texture Mapping Units 48 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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 6850

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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