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Radeon HD 5850 vs Radeon HD 6790
Intro
The Radeon HD 5850 makes use of a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this model. It features 1440(288x5) SPUs along with 72 TAUs and 32 ROPs.Compare that to the Radeon HD 6790, which comes with GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also is made up of 800 SPUs, 40 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6790 |
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150 Watts |
| Radeon HD 5850 |
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151 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6790 should be 5% quicker than the Radeon HD 5850 in general, because of its higher data rate. (explain)
| Radeon HD 6790 |
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134400 MB/sec |
| Radeon HD 5850 |
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128000 MB/sec |
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Texel Rate
The Radeon HD 5850 will be quite a bit (about 55%) more effective at AF than the Radeon HD 6790. (explain)| Radeon HD 5850 |
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52200 Mtexels/sec |
| Radeon HD 6790 |
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33600 Mtexels/sec |
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Pixel Rate
The Radeon HD 5850 will be much (more or less 73%) better at anti-aliasing than the Radeon HD 6790, and also able to handle higher screen resolutions without losing too much performance. (explain)| Radeon HD 5850 |
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23200 Mpixels/sec |
| Radeon HD 6790 |
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13440 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 5850Amazon.com
Check prices at:
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Radeon HD 6790Amazon.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 5850 | Radeon HD 6790 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | September 30, 2009 | April 2011 |
| Code Name | Cypress PRO | Barts LE |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 725 MHz | 840 MHz |
| Memory Speed | 4000 MHz | 4200 MHz |
| Power (Max TDP) | 151 watts | 150 watts |
| Bandwidth | 128000 MB/sec | 134400 MB/sec |
| Texel Rate | 52200 Mtexels/sec | 33600 Mtexels/sec |
| Pixel Rate | 23200 Mpixels/sec | 13440 Mpixels/sec |
| Unified Shaders | 1440(288x5) | 800 |
| Texture Mapping Units | 72 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 2154 million | 1700 million |
| Bus | PCIe 2.1 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. 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 maximum fill rate.
Radeon HD 5850Amazon.com
Check prices at:
|
Radeon HD 6790Amazon.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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