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Geforce GTX 670 vs Radeon HD 6870
Intro
The Geforce GTX 670 comes with clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs as well as 112 TAUs and 32 ROPs.Compare all of that to the Radeon HD 6870, which comes with GPU core 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 TAUs, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6870 |
|
151 Watts |
| Geforce GTX 670 |
|
170 Watts |
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Memory Bandwidth
In theory, the Geforce GTX 670 is 43% faster than the Radeon HD 6870 in general, due to its greater data rate. (explain)
| Geforce GTX 670 |
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192000 MB/sec |
| Radeon HD 6870 |
|
134400 MB/sec |
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Texel Rate
The Geforce GTX 670 will be a lot (approximately 103%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)| Geforce GTX 670 |
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102480 Mtexels/sec |
| Radeon HD 6870 |
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50400 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Geforce GTX 670 is superior to the Radeon HD 6870, but it probably won't make a huge difference. (explain)| Geforce GTX 670 |
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29280 Mpixels/sec |
| Radeon HD 6870 |
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28800 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 670Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6870Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Geforce GTX 670 | Radeon HD 6870 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | May 2012 | October 2010 |
| Code Name | GK104 | Barts XT |
| Fab Process | 28 nm | 40 nm |
| Bus | PCIe 3.0 x16 | PCIe x16 |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 915 MHz | 900 MHz |
| Shader Speed | 915 MHz | (N/A) MHz |
| Memory Speed | 1500 MHz (6000 MHz effective) | 1050 MHz (4200 MHz effective) |
| Unified Shaders | 1344 | 1120 |
| Texture Mapping Units | 112 | 56 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| DirectX Version | DirectX 11.1 | DirectX 11 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.1 |
| Power (Max TDP) | 170 watts | 151 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 192000 MB/sec | 134400 MB/sec |
| Texel Rate | 102480 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 29280 Mpixels/sec | 28800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has 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 anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 output rate is also dependant 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 max fill rate.
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