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Radeon HD 5850 vs Radeon HD 6790
Intro
The Radeon HD 5850 comes with a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1440(288x5) SPUs, 72 TAUs, and 32 ROPs.Compare those specs to the Radeon HD 6790, which features a clock speed of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 800 SPUs, 40 TAUs, and 16 Raster Operation Units.
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
Performance-wise, the Radeon HD 6790 should theoretically be a small bit better than the Radeon HD 5850 overall. (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 is a lot (more or less 55%) more effective at texture filtering 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
If running with a high screen resolution is important to you, then the Radeon HD 5850 is a better choice, by a large margin. (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 max amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result 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 high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core 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 in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 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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