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Radeon HD 5970 vs Radeon R9 280

Intro

The Radeon HD 5970 makes use of 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 card. It features 1600 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Compare all of that to the Radeon R9 280, which comes with core speeds of 933 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 280 250 Watts
Radeon HD 5970 294 Watts
Difference: 44 Watts (18%)

Memory Bandwidth

Theoretically, the Radeon HD 5970 should perform a bit faster than the Radeon R9 280 in general. (explain)

Radeon HD 5970 256000 MB/sec
Radeon R9 280 240000 MB/sec
Difference: 16000 (7%)

Texel Rate

The Radeon HD 5970 should be quite a bit (more or less 122%) better at AF than the Radeon R9 280. (explain)

Radeon HD 5970 232000 Mtexels/sec
Radeon R9 280 104496 Mtexels/sec
Difference: 127504 (122%)

Pixel Rate

The Radeon HD 5970 is much (approximately 211%) faster with regards to FSAA than the Radeon R9 280, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 5970 92800 Mpixels/sec
Radeon R9 280 29856 Mpixels/sec
Difference: 62944 (211%)

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 R9 280

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 R9 280
Manufacturer AMD AMD
Year November 2009 March 2014
Code Name Hemlock XT Tahiti Pro
Memory 1024 MB (x2) 3072 MB
Core Speed 725 MHz (x2) 933 MHz
Memory Speed 4000 MHz (x2) 5000 MHz
Power (Max TDP) 294 watts 250 watts
Bandwidth 256000 MB/sec 240000 MB/sec
Texel Rate 232000 Mtexels/sec 104496 Mtexels/sec
Pixel Rate 92800 Mpixels/sec 29856 Mpixels/sec
Unified Shaders 1600 (x2) 1792
Texture Mapping Units 160 (x2) 112
Render Output Units 64 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 384-bit
Fab Process 40 nm 28 nm
Transistors 2154 million 4313 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially 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 R9 280

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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