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Radeon HD 5970 vs Radeon HD 6970

Intro

The Radeon HD 5970 features a GPU core speed of 725 MHz, and the 1024 MB of GDDR5 memory is set to run at 1000 MHz through a 256-bit bus. It also features 1600 SPUs, 160 TAUs, and 64 ROPs.

Compare those specs to the Radeon HD 6970, which comes with GPU clock speed of 880 MHz, and 2048 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 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

The Radeon HD 5970 should theoretically be much faster than the Radeon HD 6970 overall. (explain)

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

Texel Rate

The Radeon HD 5970 is a lot (about 175%) faster with regards to 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 resolution is important to you, then the Radeon HD 5970 is the winner, and very much so. (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

Check prices at:

Radeon HD 6970

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 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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type 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 better 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 per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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

Display Prices

Hide Prices

Radeon HD 5970

Amazon.com

Check prices at:

Radeon HD 6970

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.

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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