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Radeon HD 6950 2GB vs Radeon HD 7870 XT
Intro
The Radeon HD 6950 2GB features core clock speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.Compare that to the Radeon HD 7870 XT, which features core clock speeds of 925 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 Texture Address Units and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7870 XT |
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185 Watts |
| Radeon HD 6950 2GB |
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200 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 7870 XT should in theory be a little bit superior to the Radeon HD 6950 2GB in general. (explain)
| Radeon HD 7870 XT |
|
192000 MB/sec |
| Radeon HD 6950 2GB |
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160000 MB/sec |
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Texel Rate
The Radeon HD 7870 XT will be much (approximately 26%) better at anisotropic filtering than the Radeon HD 6950 2GB. (explain)| Radeon HD 7870 XT |
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88800 Mtexels/sec |
| Radeon HD 6950 2GB |
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70400 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 7870 XT is the winner, but it probably won't make a huge difference. (explain)| Radeon HD 7870 XT |
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29600 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 6950 2GBAmazon.com
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Radeon HD 7870 XTAmazon.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 6950 2GB | Radeon HD 7870 XT |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | December 2010 | November 2012 |
| Code Name | Cayman Pro | Tahiti LE |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 800 MHz | 925 MHz |
| Memory Speed | 5000 MHz | 6000 MHz |
| Power (Max TDP) | 200 watts | 185 watts |
| Bandwidth | 160000 MB/sec | 192000 MB/sec |
| Texel Rate | 70400 Mtexels/sec | 88800 Mtexels/sec |
| Pixel Rate | 25600 Mpixels/sec | 29600 Mpixels/sec |
| Unified Shaders | 1408 | 1536 |
| Texture Mapping Units | 88 | 96 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 2640 million | 4313 million |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.3 |
Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 6950 2GBAmazon.com
Check prices at:
|
Radeon HD 7870 XTAmazon.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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