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Compare any two graphics cards:

Radeon HD 6870 vs Radeon HD 6950


The Radeon HD 6870 has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 1120 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare that to the Radeon HD 6950, which makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a speed of 1250 MHz on this specific model. It features 1408 SPUs as well as 88 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870 151 Watts
Radeon HD 6950 200 Watts
Difference: 49 Watts (32%)

Memory Bandwidth

The Radeon HD 6950 should in theory be a small bit faster than the Radeon HD 6870 in general. (explain)

Radeon HD 6950 160000 MB/sec
Radeon HD 6870 134400 MB/sec
Difference: 25600 (19%)

Texel Rate

The Radeon HD 6950 is much (more or less 40%) better at AF than the Radeon HD 6870. (explain)

Radeon HD 6950 70400 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 20000 (40%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6870 is the winner, not by a very large margin though. (explain)

Radeon HD 6870 28800 Mpixels/sec
Radeon HD 6950 25600 Mpixels/sec
Difference: 3200 (13%)

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

Display Prices

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Radeon HD 6870

Radeon HD 6950

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.


Display Specifications

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Model Radeon HD 6870 Radeon HD 6950
Manufacturer AMD AMD
Year October 2010 December 2010
Code Name Barts XT Cayman Pro
Memory 1024 MB 1024 MB
Core Speed 900 MHz 800 MHz
Memory Speed 4200 MHz 5000 MHz
Power (Max TDP) 151 watts 200 watts
Bandwidth 134400 MB/sec 160000 MB/sec
Texel Rate 50400 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 28800 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 1120 1408
Texture Mapping Units 56 88
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1700 million 2640 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling 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 the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.


5 Responses to “Radeon HD 6870 vs Radeon HD 6950”
HD 6950 oder HD 6870 ? says:

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pp965 says:

I have HIS HD 6950.
I really like it.

Koala says:

i have the Powercolor HD6950 fucking love the card

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