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Radeon HD 5770 vs Radeon HD 6950 2GB
Intro
The Radeon HD 5770 features clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.Compare those specs to the Radeon HD 6950 2GB, which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this particular model. It features 1408 SPUs along with 88 Texture Address Units and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| Radeon HD 6950 2GB |
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200 Watts |
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Memory Bandwidth
The Radeon HD 6950 2GB should theoretically perform quite a bit faster than the Radeon HD 5770 in general. (explain)
| Radeon HD 6950 2GB |
|
160000 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The Radeon HD 6950 2GB should be a lot (about 107%) more effective at texture filtering than the Radeon HD 5770. (explain)| Radeon HD 6950 2GB |
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70400 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
If running with high levels of AA is important to you, then the Radeon HD 6950 2GB is a better choice, by far. (explain)| Radeon HD 6950 2GB |
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25600 Mpixels/sec |
| Radeon HD 5770 |
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13600 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 5770Amazon.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 5770 | Radeon HD 6950 2GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | October 13, 2009 | December 2010 |
| Code Name | Juniper XT | Cayman Pro |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 850 MHz | 800 MHz |
| Memory Speed | 4800 MHz | 5000 MHz |
| Power (Max TDP) | 108 watts | 200 watts |
| Bandwidth | 76800 MB/sec | 160000 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 70400 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1408 |
| Texture Mapping Units | 40 | 88 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 1040 million | 2640 million |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one 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 sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 5770Amazon.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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