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Radeon HD 5770 vs Radeon HD 6670 (OEM)
Intro
The Radeon HD 5770 comes with a core clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.Compare those specifications to the Radeon HD 6670 (OEM), which has a core clock speed of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 480 SPUs, 24 TAUs, and 8 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) |
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63 Watts |
| Radeon HD 5770 |
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108 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 5770 is 20% faster than the Radeon HD 6670 (OEM) in general, due to its higher bandwidth. (explain)
| Radeon HD 5770 |
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76800 MB/sec |
| Radeon HD 6670 (OEM) |
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64000 MB/sec |
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Texel Rate
The Radeon HD 5770 should be a lot (approximately 77%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)| Radeon HD 5770 |
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34000 Mtexels/sec |
| Radeon HD 6670 (OEM) |
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19200 Mtexels/sec |
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Pixel Rate
The Radeon HD 5770 will be a lot (about 113%) better at FSAA than the Radeon HD 6670 (OEM), and also able to handle higher resolutions without slowing down too much. (explain)| Radeon HD 5770 |
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13600 Mpixels/sec |
| Radeon HD 6670 (OEM) |
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6400 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.
Radeon HD 5770Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6670 (OEM)Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Radeon HD 5770 | Radeon HD 6670 (OEM) |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | October 13, 2009 | February 2011 |
| Code Name | Juniper XT | Turks |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe 2.1 x16 | PCIe 2.1 x16 |
| Memory | 1024 MB | 512 MB |
| Core Speed | 850 MHz | 800 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 1200 MHz | 1000 MHz |
| Unified Shaders | 800(160x5) | 480 |
| Texture Mapping Units | 40 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
| Power (Max TDP) | 108 watts | 63 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 76800 MB/sec | 64000 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 6400 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units of the card 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 per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially 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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