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Radeon HD 5770 vs Radeon HD 7850
Intro
The Radeon HD 5770 has clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.Compare all of that to the Radeon HD 7850, which makes use of a 28 nm design. ATi has clocked the core speed at 860 MHz. The GDDR5 RAM works at a frequency of 1200 MHz on this specific model. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| Radeon HD 7850 |
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130 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 7850 should be 100% quicker than the Radeon HD 5770 overall, due to its greater data rate. (explain)
| Radeon HD 7850 |
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153600 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The Radeon HD 7850 should be quite a bit (approximately 62%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)| Radeon HD 7850 |
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55040 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
The Radeon HD 7850 should be quite a bit (about 102%) better at full screen anti-aliasing than the Radeon HD 5770, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)| Radeon HD 7850 |
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27520 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Radeon HD 5770Amazon.com
Other US-based stores
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Radeon HD 7850Amazon.com
Other US-based stores
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Specifications
| Model | Radeon HD 5770 | Radeon HD 7850 |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | October 13, 2009 | March 2012 |
| Code Name | Juniper XT | Pitcairn Pro |
| Fab Process | 40 nm | 28 nm |
| Bus | PCIe 2.1 x16 | PCIe 3.0 x16 |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 850 MHz | 860 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 1200 MHz (4800 MHz effective) | 1200 MHz (4800 MHz effective) |
| Unified Shaders | 800(160x5) | 1024 |
| Texture Mapping Units | 40 | 64 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.2 |
| Power (Max TDP) | 108 watts | 130 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 76800 MB/sec | 153600 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 55040 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 27520 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface 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 ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at 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 can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
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