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Radeon HD 5970 vs Radeon HD 6970

Intro

The Radeon HD 5970 uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular model. It features 1600 SPUs along with 160 Texture Address Units and 64 Rasterization Operator Units.

Compare that to the Radeon HD 6970, which comes with core speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6970 250 Watts
Radeon HD 5970 294 Watts
Difference: 44 Watts (18%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5970 should theoretically be a lot superior to the Radeon HD 6970 in general. (explain)

Radeon HD 5970 256000 MB/sec
Radeon HD 6970 176000 MB/sec
Difference: 80000 (45%)

Texel Rate

The Radeon HD 5970 should be quite a bit (approximately 175%) more effective at texture filtering than the Radeon HD 6970. (explain)

Radeon HD 5970 232000 Mtexels/sec
Radeon HD 6970 84480 Mtexels/sec
Difference: 147520 (175%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5970 is the winner, by far. (explain)

Radeon HD 5970 92800 Mpixels/sec
Radeon HD 6970 28160 Mpixels/sec
Difference: 64640 (230%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 5970

Amazon.com

Radeon HD 6970

Amazon.com

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 5970 Radeon HD 6970
Manufacturer AMD AMD
Year November 2009 December 2010
Code Name Hemlock XT Cayman XT
Memory 1024 MB (x2) 2048 MB
Core Speed 725 MHz (x2) 880 MHz
Memory Speed 4000 MHz (x2) 5500 MHz
Power (Max TDP) 294 watts 250 watts
Bandwidth 256000 MB/sec 176000 MB/sec
Texel Rate 232000 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 92800 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 1600 (x2) 1536
Texture Mapping Units 160 (x2) 96
Render Output Units 64 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 2640 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 5970

Amazon.com

Radeon HD 6970

Amazon.com

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.

Comments

2 Responses to “Radeon HD 5970 vs Radeon HD 6970”
shozab says:

even double 6970 is no match for great 5970.
xfx 5970 4gb strongest card ever.

Anonymous says:

wow.... why is this card so powerfull?!?!?!?

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