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Radeon HD 5870 vs Radeon HD 6850
Intro
The Radeon HD 5870 uses a 40 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 memory works at a frequency of 1200 MHz on this particular model. It features 1600(320x5) SPUs along with 80 TAUs and 32 ROPs.Compare all of that to the Radeon HD 6850, which comes with a core clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It is made up of 960 SPUs, 48 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6850 |
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127 Watts |
| Radeon HD 5870 |
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188 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 5870 should in theory be a small bit better than the Radeon HD 6850 overall. (explain)
| Radeon HD 5870 |
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153600 MB/sec |
| Radeon HD 6850 |
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128000 MB/sec |
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Texel Rate
The Radeon HD 5870 should be quite a bit (more or less 83%) faster with regards to AF than the Radeon HD 6850. (explain)| Radeon HD 5870 |
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68000 Mtexels/sec |
| Radeon HD 6850 |
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37200 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon HD 5870 is a better choice, but it probably won't make a huge difference. (explain)| Radeon HD 5870 |
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27200 Mpixels/sec |
| Radeon HD 6850 |
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24800 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 5870Amazon.com
Check prices at:
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Radeon HD 6850Amazon.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 5870 | Radeon HD 6850 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | September 23, 2009 | October 2010 |
| Code Name | Cypress XT | Barts Pro |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 850 MHz | 775 MHz |
| Memory Speed | 4800 MHz | 4000 MHz |
| Power (Max TDP) | 188 watts | 127 watts |
| Bandwidth | 153600 MB/sec | 128000 MB/sec |
| Texel Rate | 68000 Mtexels/sec | 37200 Mtexels/sec |
| Pixel Rate | 27200 Mpixels/sec | 24800 Mpixels/sec |
| Unified Shaders | 1600(320x5) | 960 |
| Texture Mapping Units | 80 | 48 |
| Render Output Units | 32 | 32 |
| 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 x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 5870Amazon.com
Check prices at:
|
Radeon HD 6850Amazon.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
One Response to “Radeon HD 5870 vs Radeon HD 6850”[...] for 10.8.1 ML? I've got the v1 Asus EAH5870, works Out of Box. A bit powerful than EAH6850. See there. OS X Mountain Lion 10.8.1 : Mac Pro 3.1, DSDT. Asus Maximus V Gene, i7 3770, Asus HD [...]