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GeForce GTX 550 Ti vs Radeon HD 6870
Intro
The GeForce GTX 550 Ti comes with a GPU core speed of 900 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1026 MHz through a 192-bit bus. It also features 192 Stream Processors, 32 Texture Address Units, and 24 ROPs.Compare that to the Radeon HD 6870, which has a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is made up of 1120 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 550 Ti |
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116 Watts |
| Radeon HD 6870 |
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151 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6870 should be quite a bit faster than the GeForce GTX 550 Ti overall. (explain)
| Radeon HD 6870 |
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134400 MB/sec |
| GeForce GTX 550 Ti |
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98496 MB/sec |
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Texel Rate
The Radeon HD 6870 is much (about 75%) better at texture filtering than the GeForce GTX 550 Ti. (explain)| Radeon HD 6870 |
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50400 Mtexels/sec |
| GeForce GTX 550 Ti |
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28800 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 6870 is a better choice, by a large margin. (explain)| Radeon HD 6870 |
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28800 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 6870Amazon.com
Other US-based stores
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Specifications
| Model | GeForce GTX 550 Ti | Radeon HD 6870 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 2011 | October 2010 |
| Code Name | GF116 | Barts XT |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 900 MHz | 900 MHz |
| Shader Speed | 1800 MHz | (N/A) MHz |
| Memory Speed | 1026 MHz (4104 MHz effective) | 1050 MHz (4200 MHz effective) |
| Unified Shaders | 192 | 1120 |
| Texture Mapping Units | 32 | 56 |
| 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 | 151 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 98496 MB/sec | 134400 MB/sec |
| Texel Rate | 28800 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 21600 Mpixels/sec | 28800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
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