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Radeon HD 5970 vs Radeon HD 7870
Intro
The Radeon HD 5970 features a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1600 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.Compare all that to the Radeon HD 7870, which has GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 TAUs, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7870 |
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175 Watts |
| Radeon HD 5970 |
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294 Watts |
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Memory Bandwidth
In theory, the Radeon HD 5970 should perform quite a bit faster than the Radeon HD 7870 in general. (explain)
| Radeon HD 5970 |
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256000 MB/sec |
| Radeon HD 7870 |
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153600 MB/sec |
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Texel Rate
The Radeon HD 5970 should be quite a bit (approximately 190%) faster with regards to texture filtering than the Radeon HD 7870. (explain)| Radeon HD 5970 |
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232000 Mtexels/sec |
| Radeon HD 7870 |
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80000 Mtexels/sec |
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Pixel Rate
The Radeon HD 5970 should be a lot (about 190%) faster with regards to FSAA than the Radeon HD 7870, and also should be able to handle higher screen resolutions while still performing well. (explain)| Radeon HD 5970 |
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92800 Mpixels/sec |
| Radeon HD 7870 |
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32000 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
Radeon HD 5970Amazon.com
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Radeon HD 7870Amazon.com
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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
| Model | Radeon HD 5970 | Radeon HD 7870 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | November 2009 | March 2012 |
| Code Name | Hemlock XT | Pitcairn XT |
| Memory | 1024 MB (x2) | 2048 MB |
| Core Speed | 725 MHz (x2) | 1000 MHz |
| Memory Speed | 4000 MHz (x2) | 4800 MHz |
| Power (Max TDP) | 294 watts | 175 watts |
| Bandwidth | 256000 MB/sec | 153600 MB/sec |
| Texel Rate | 232000 Mtexels/sec | 80000 Mtexels/sec |
| Pixel Rate | 92800 Mpixels/sec | 32000 Mpixels/sec |
| Unified Shaders | 1600 (x2) | 1280 |
| Texture Mapping Units | 160 (x2) | 80 |
| Render Output Units | 64 (x2) | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit (x2) | 256-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 2154 million | 2800 million |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.
Radeon HD 5970Amazon.com
Check prices at:
|
Radeon HD 7870Amazon.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
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