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Radeon HD 5850 vs Radeon HD 6870
Intro
The Radeon HD 5850 has a core clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1440(288x5) SPUs, 72 TAUs, and 32 Raster Operation Units.Compare all of that to the Radeon HD 6870, which has a core clock speed of 900 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 comprised of 1120 SPUs, 56 Texture Address Units, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
The Radeon HD 6870 should in theory perform just a bit faster than the Radeon HD 5850 in general. (explain)
| Radeon HD 6870 |
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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 small bit (about 4%) more effective at AF than the Radeon HD 6870. (explain)| Radeon HD 5850 |
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52200 Mtexels/sec |
| Radeon HD 6870 |
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50400 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 6870 is the winner, by a large margin. (explain)| Radeon HD 6870 |
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28800 Mpixels/sec |
| Radeon HD 5850 |
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23200 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
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Radeon HD 6870Amazon.com
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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 6870 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | September 30, 2009 | October 2010 |
| Code Name | Cypress PRO | Barts XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 725 MHz | 900 MHz |
| Memory Speed | 4000 MHz | 4200 MHz |
| Power (Max TDP) | 151 watts | 151 watts |
| Bandwidth | 128000 MB/sec | 134400 MB/sec |
| Texel Rate | 52200 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 23200 Mpixels/sec | 28800 Mpixels/sec |
| Unified Shaders | 1440(288x5) | 1120 |
| Texture Mapping Units | 72 | 56 |
| 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 max amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 5850Amazon.com
Check prices at:
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Radeon HD 6870Amazon.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.
|
Comments
5 Responses to “Radeon HD 5850 vs Radeon HD 6870”[...] reference cards, MSI are very quiet but not amazing for overclocks. The 6870 has just come out - http://www.hwcompare.com/6024/radeon...adeon-hd-6870/ - It's theoretically slightly faster and it is better at tesselation. However - the cheapest I can [...]
[...] la 6870 sin lugar a dudas como ves : comparacion 5850 vs 6870/ es un pocomejor y consume mucho menos __________________ cpu:amd thuban x6 [...]
[...] [...]
[...] Re: Vale la pena el cambio de hd 5850 a hd 6870 en efecto, es una subida de un 8% osea no es favorable Radeon HD 5850 vs Radeon HD 6870 – Performance Comparison Benchmarks @ Hardware Compare [...]
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