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Radeon HD 5770 vs Radeon HD 6950
Intro
The Radeon HD 5770 features a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.Compare those specifications to the Radeon HD 6950, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 1408 SPUs as well as 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 |
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200 Watts |
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Memory Bandwidth
The Radeon HD 6950 should theoretically be a lot faster than the Radeon HD 5770 overall. (explain)
| Radeon HD 6950 |
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160000 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The Radeon HD 6950 should be much (approximately 107%) faster with regards to anisotropic filtering than the Radeon HD 5770. (explain)| Radeon HD 6950 |
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70400 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
The Radeon HD 6950 will be quite a bit (approximately 88%) more effective at full screen anti-aliasing than the Radeon HD 5770, and able to handle higher screen resolutions more effectively. (explain)| Radeon HD 6950 |
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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 6950Amazon.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 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | October 13, 2009 | December 2010 |
| Code Name | Juniper XT | Cayman Pro |
| Memory | 1024 MB | 1024 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 max amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should 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 AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher 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 number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's 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 also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.
Radeon HD 5770Amazon.com
Check prices at:
|
Radeon HD 6950Amazon.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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