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Radeon HD 6870 vs Radeon HD 6950 2GB
Intro
The Radeon HD 6870 has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 1120 SPUs as well as 56 TAUs and 32 Rasterization Operator Units.Compare those specs to the Radeon HD 6950 2GB, which uses a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory runs at a speed of 1250 MHz on this particular card. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6870 |
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151 Watts |
| Radeon HD 6950 2GB |
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200 Watts |
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Memory Bandwidth
The Radeon HD 6950 2GB should theoretically be a little bit faster than the Radeon HD 6870 overall. (explain)
| Radeon HD 6950 2GB |
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160000 MB/sec |
| Radeon HD 6870 |
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134400 MB/sec |
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Texel Rate
The Radeon HD 6950 2GB should be a lot (approximately 40%) more effective at AF than the Radeon HD 6870. (explain)| Radeon HD 6950 2GB |
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70400 Mtexels/sec |
| Radeon HD 6870 |
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50400 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 6870 is the winner, but it probably won't make a huge difference. (explain)| Radeon HD 6870 |
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28800 Mpixels/sec |
| Radeon HD 6950 2GB |
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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.
Price Comparison
Radeon HD 6870Amazon.com
Check prices at:
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Radeon HD 6950 2GBAmazon.com
Check prices at:
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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 6870 | Radeon HD 6950 2GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | October 2010 | December 2010 |
| Code Name | Barts XT | Cayman Pro |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 900 MHz | 800 MHz |
| Memory Speed | 4200 MHz | 5000 MHz |
| Power (Max TDP) | 151 watts | 200 watts |
| Bandwidth | 134400 MB/sec | 160000 MB/sec |
| Texel Rate | 50400 Mtexels/sec | 70400 Mtexels/sec |
| Pixel Rate | 28800 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 1120 | 1408 |
| Texture Mapping Units | 56 | 88 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 1700 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 largest amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 6870Amazon.com
Check prices at:
|
Radeon HD 6950 2GBAmazon.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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