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GeForce GTX 550 Ti vs Radeon HD 6850
Intro
The GeForce GTX 550 Ti features a GPU core speed of 900 MHz, and the 1024 MB of GDDR5 memory is set to run at 1026 MHz through a 192-bit bus. It also features 192 SPUs, 32 Texture Address Units, and 24 Raster Operation Units.Compare that to the Radeon HD 6850, which uses a 40 nm design. ATi has clocked the core frequency at 775 MHz. The GDDR5 memory works at a speed of 1000 MHz on this card. It features 960 SPUs as well as 48 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 550 Ti |
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116 Watts |
| Radeon HD 6850 |
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127 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6850 will be 30% quicker than the GeForce GTX 550 Ti overall, due to its greater bandwidth. (explain)
| Radeon HD 6850 |
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128000 MB/sec |
| GeForce GTX 550 Ti |
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98496 MB/sec |
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Texel Rate
The Radeon HD 6850 is a lot (about 29%) better at texture filtering than the GeForce GTX 550 Ti. (explain)| Radeon HD 6850 |
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37200 Mtexels/sec |
| GeForce GTX 550 Ti |
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28800 Mtexels/sec |
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Pixel Rate
The Radeon HD 6850 will be a little bit (more or less 15%) more effective at full screen anti-aliasing than the GeForce GTX 550 Ti, and also will be able to handle higher screen resolutions without losing too much performance. (explain)| Radeon HD 6850 |
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24800 Mpixels/sec |
| GeForce GTX 550 Ti |
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21600 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.
GeForce GTX 550 TiAmazon.com
Other US-based stores
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Radeon HD 6850Amazon.com
Other US-based stores
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Specifications
| Model | GeForce GTX 550 Ti | Radeon HD 6850 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 2011 | October 2010 |
| Code Name | GF116 | Barts Pro |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 900 MHz | 775 MHz |
| Shader Speed | 1800 MHz | (N/A) MHz |
| Memory Speed | 1026 MHz (4104 MHz effective) | 1000 MHz (4000 MHz effective) |
| Unified Shaders | 192 | 960 |
| Texture Mapping Units | 32 | 48 |
| Render Output Units | 24 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 192-bit | 256-bit |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
| Power (Max TDP) | 116 watts | 127 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 98496 MB/sec | 128000 MB/sec |
| Texel Rate | 28800 Mtexels/sec | 37200 Mtexels/sec |
| Pixel Rate | 21600 Mpixels/sec | 24800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
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