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Radeon HD 6950 2GB vs Radeon HD 7970
Intro
The Radeon HD 6950 2GB has a clock frequency of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is comprised of 1408 SPUs, 88 TAUs, and 32 ROPs.Compare those specifications to the Radeon HD 7970, which uses a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM works at a speed of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.
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
In theory, the Radeon HD 7970 will be 65% faster than the Radeon HD 6950 2GB overall, because of its greater bandwidth. (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 should be quite a bit (approximately 68%) better at anisotropic filtering 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 just a bit (about 16%) more effective at full screen anti-aliasing than the Radeon HD 6950 2GB, and will be able to handle higher screen resolutions while still performing well. (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
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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: Bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum 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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