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Radeon HD 5970 vs Radeon HD 7950 3GB
Intro
The Radeon HD 5970 comes with core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1600 SPUs along with 160 TAUs and 64 ROPs.Compare those specs to the Radeon HD 7950 3GB, which uses a 28 nm design. ATi has set the core speed at 800 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this model. It features 1792 SPUs along with 112 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7950 3GB |
|
200 Watts |
| Radeon HD 5970 |
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294 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 5970 should be 7% faster than the Radeon HD 7950 3GB in general, because of its higher bandwidth. (explain)
| Radeon HD 5970 |
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256000 MB/sec |
| Radeon HD 7950 3GB |
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240000 MB/sec |
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Texel Rate
The Radeon HD 5970 should be a lot (more or less 159%) better at texture filtering than the Radeon HD 7950 3GB. (explain)| Radeon HD 5970 |
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232000 Mtexels/sec |
| Radeon HD 7950 3GB |
|
89600 Mtexels/sec |
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Pixel Rate
The Radeon HD 5970 is much (about 263%) better at full screen anti-aliasing than the Radeon HD 7950 3GB, and able to handle higher screen resolutions without slowing down too much. (explain)| Radeon HD 5970 |
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92800 Mpixels/sec |
| Radeon HD 7950 3GB |
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25600 Mpixels/sec |
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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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Radeon HD 5970Amazon.com
Other US-based stores
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Radeon HD 7950 3GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Radeon HD 5970 | Radeon HD 7950 3GB |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | November 2009 | January 2012 |
| Code Name | Hemlock XT | Tahiti Pro |
| Fab Process | 40 nm | 28 nm |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| Memory | 1024 MB (x2) | 3072 MB |
| Core Speed | 725 MHz (x2) | 800 MHz |
| Shader Speed | N/A MHz (x2) | (N/A) MHz |
| Memory Speed | 1000 MHz (x2) | 1250 MHz |
| 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 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
| Power (Max TDP) | 294 watts | 200 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 256000 MB/sec | 240000 MB/sec |
| Texel Rate | 232000 Mtexels/sec | 89600 Mtexels/sec |
| Pixel Rate | 92800 Mpixels/sec | 25600 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
Comments
One Response to “Radeon HD 5970 vs Radeon HD 7950 3GB”Flawed, because the HD 5970 does not have 320 TMUs and 128 ROPs, only 160 TMUs and 64 Rops.