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GeForce GTX 550 Ti vs Radeon HD 6850
Intro
The GeForce GTX 550 Ti comes with a clock frequency of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also uses a 192-bit bus, and makes use of a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 24 ROPs.Compare that to the Radeon HD 6850, which features a clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 960 SPUs, 48 TAUs, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTX 550 Ti |
|
116 Watts |
| Radeon HD 6850 |
|
127 Watts |
|
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6850 is 30% quicker than the GeForce GTX 550 Ti in general, because of its higher data rate. (explain)
| Radeon HD 6850 |
|
128000 MB/sec |
| GeForce GTX 550 Ti |
|
98496 MB/sec |
|
|
Texel Rate
The Radeon HD 6850 should be quite a bit (more or less 29%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)| Radeon HD 6850 |
|
37200 Mtexels/sec |
| GeForce GTX 550 Ti |
|
28800 Mtexels/sec |
|
|
Pixel Rate
If using a high resolution is important to you, then the Radeon HD 6850 is a better choice, not by a very large margin though. (explain)| Radeon HD 6850 |
|
24800 Mpixels/sec |
| GeForce GTX 550 Ti |
|
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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core 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 per second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to reach the maximum fill rate.
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