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Radeon HD 5970 vs Radeon HD 6970

Intro

The Radeon HD 5970 comes with a GPU core speed of 725 MHz, and the 1024 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also is made up of 1600 Stream Processors, 160 Texture Address Units, and 64 Raster Operation Units.

Compare those specs to the Radeon HD 6970, which has a core clock speed of 880 MHz and a GDDR5 memory speed of 1375 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It features 1536 SPUs, 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

In theory, the Radeon HD 5970 should perform quite a bit 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 quite a bit (more or less 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

The Radeon HD 5970 will be quite a bit (approximately 230%) faster with regards to AA than the Radeon HD 6970, and also should be capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock 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 rate also depends 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

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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