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Radeon HD 5850 vs Radeon HD 6790
Intro
The Radeon HD 5850 features a core clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It is made up of 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.Compare all of that to the Radeon HD 6790, which has core speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs along with 40 Texture Address Units 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 will be 5% faster than the Radeon HD 5850 overall, because of its greater 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 should be a lot (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 should be a lot (approximately 73%) more effective at AA than the Radeon HD 6790, and will be able to handle higher screen resolutions without slowing down too much. (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 (in units of MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount 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 in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to 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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