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Radeon HD 6950 2GB vs Radeon HD 7970
Intro
The Radeon HD 6950 2GB comes with a clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It features 1408 SPUs, 88 TAUs, and 32 ROPs.Compare all that to the Radeon HD 7970, which uses a 28 nm design. AMD has set the core speed at 925 MHz. The GDDR5 RAM runs at a speed of 1375 MHz on this particular card. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6950 2GB |
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200 Watts |
| Radeon HD 7970 |
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250 Watts |
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Memory Bandwidth
The Radeon HD 7970, in theory, should perform much faster than the Radeon HD 6950 2GB overall. (explain)
| Radeon HD 7970 |
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264000 MB/sec |
| Radeon HD 6950 2GB |
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160000 MB/sec |
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Texel Rate
The Radeon HD 7970 is a lot (about 68%) more effective at AF than the Radeon HD 6950 2GB. (explain)| Radeon HD 7970 |
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118400 Mtexels/sec |
| Radeon HD 6950 2GB |
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70400 Mtexels/sec |
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Pixel Rate
The Radeon HD 7970 is a small bit (more or less 16%) better at FSAA than the Radeon HD 6950 2GB, and also should be able to handle higher screen resolutions without losing too much performance. (explain)| Radeon HD 7970 |
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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
Check prices at:
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Radeon HD 7970Amazon.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 7970 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | December 2010 | January 2012 |
| Code Name | Cayman Pro | Tahiti XT |
| Memory | 2048 MB | 3072 MB |
| Core Speed | 800 MHz | 925 MHz |
| Memory Speed | 5000 MHz | 5500 MHz |
| Power (Max TDP) | 200 watts | 250 watts |
| Bandwidth | 160000 MB/sec | 264000 MB/sec |
| Texel Rate | 70400 Mtexels/sec | 118400 Mtexels/sec |
| Pixel Rate | 25600 Mpixels/sec | 29600 Mpixels/sec |
| Unified Shaders | 1408 | 2048 |
| Texture Mapping Units | 88 | 128 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 384-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 4.2 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.
Radeon HD 6950 2GBAmazon.com
Check prices at:
|
Radeon HD 7970Amazon.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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