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GeForce GTX 550 Ti vs Radeon HD 6870
Intro
The GeForce GTX 550 Ti makes use of a 40 nm design. nVidia has set the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1026 MHz on this model. It features 192 SPUs along with 32 TAUs and 24 ROPs.Compare those specifications to the Radeon HD 6870, which has GPU core speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also features 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
The Radeon HD 6870, in theory, 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 will be a lot (approximately 75%) more effective at AF 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
The Radeon HD 6870 is much (more or less 33%) better at full screen anti-aliasing than the GeForce GTX 550 Ti, and capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total 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 processed in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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