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Radeon HD 6670 (OEM) vs Radeon HD 6750 1GB
Intro
The Radeon HD 6670 (OEM) comes with a core clock speed of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It features 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.Compare those specs to the Radeon HD 6750 1GB, which comes with clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 720 SPUs along with 36 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) |
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63 Watts |
| Radeon HD 6750 1GB |
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86 Watts |
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Memory Bandwidth
Both cards have the exact same bandwidth, so theoretically they should perform exactly the same. (explain)
Texel Rate
The Radeon HD 6750 1GB will be quite a bit (more or less 36%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)| Radeon HD 6750 1GB |
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26100 Mtexels/sec |
| Radeon HD 6670 (OEM) |
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19200 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 6750 1GB is the winner, by far. (explain)| Radeon HD 6750 1GB |
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11600 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
Radeon HD 6670 (OEM)Amazon.com
Check prices at:
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Radeon HD 6750 1GBAmazon.com
Check prices at:
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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Specifications
| Model | Radeon HD 6670 (OEM) | Radeon HD 6750 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | February 2011 | January 2011 |
| Code Name | Turks | Juniper Pro |
| Memory | 512 MB | 1024 MB |
| Core Speed | 800 MHz | 725 MHz |
| Memory Speed | 4000 MHz | 4000 MHz |
| Power (Max TDP) | 63 watts | 86 watts |
| Bandwidth | 64000 MB/sec | 64000 MB/sec |
| Texel Rate | 19200 Mtexels/sec | 26100 Mtexels/sec |
| Pixel Rate | 6400 Mpixels/sec | 11600 Mpixels/sec |
| Unified Shaders | 480 | 720 |
| Texture Mapping Units | 24 | 36 |
| Render Output Units | 8 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 715 million | 1040 million |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 are processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the 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 most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.
Radeon HD 6670 (OEM)Amazon.com
Check prices at:
|
Radeon HD 6750 1GBAmazon.com
Check prices at:
|
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
|
Comments
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