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Radeon HD 5770 vs Radeon HD 6870
Intro
The Radeon HD 5770 has a GPU core clock speed of 850 MHz, and the 1024 MB of GDDR5 memory runs at 1200 MHz through a 128-bit bus. It also is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.Compare all of that to the Radeon HD 6870, which makes use of a 40 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1050 MHz on this model. It features 1120 SPUs as well as 56 TAUs and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| Radeon HD 6870 |
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151 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 6870 should be quite a bit faster than the Radeon HD 5770 in general. (explain)
| Radeon HD 6870 |
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134400 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The Radeon HD 6870 should be quite a bit (more or less 48%) faster with regards to texture filtering than the Radeon HD 5770. (explain)| Radeon HD 6870 |
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50400 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
If running with lots of anti-aliasing is important to you, then the Radeon HD 6870 is a better choice, and very much so. (explain)| Radeon HD 6870 |
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28800 Mpixels/sec |
| Radeon HD 5770 |
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13600 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 5770Amazon.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 5770 | Radeon HD 6870 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | October 13, 2009 | October 2010 |
| Code Name | Juniper XT | Barts XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 850 MHz | 900 MHz |
| Memory Speed | 4800 MHz | 4200 MHz |
| Power (Max TDP) | 108 watts | 151 watts |
| Bandwidth | 76800 MB/sec | 134400 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 28800 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1120 |
| Texture Mapping Units | 40 | 56 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 1040 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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.
Radeon HD 5770Amazon.com
Check prices at:
|
Radeon HD 6870Amazon.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
5 Responses to “Radeon HD 5770 vs Radeon HD 6870”[...] HD5770 ist die 6770 bzw. 6790 Der Leistungssprung ist gewaltig, die HD 6870 ist 112% schneller Radeon HD 5770 vs Radeon HD 6870 – Performance Comparison Benchmarks @ Hardware Compare Bench - GPU11 - AnandTech :: Your Source for Hardware Analysis and News Im Vergleich zur HD 5870 [...]
i made the change from a sapphire 5770 toxic to another sapphire 6870... it was def worth the change... i played dead rising 2 on both cards... the 5770 could only handle trilinear and med zombies and low shadows... the 6870 does it easily on 4x af and everything else on high... the 6870 does very well even with shadows and everything.
the hd 5770 is more comparable to the 6770 or 6790, the because of this the performance boost is huge, the HD 6870 is 112% more powerful
[...] permalink Hatte mal langeweille und habe das gefunden. Radeon HD 5770 vs Radeon HD 6870 [...]
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