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Radeon HD 4830 512MB vs Radeon HD 6670 (OEM)
Intro
The Radeon HD 4830 512MB makes use of a 55 nm design. AMD has set the core frequency at 575 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this model. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.Compare those specs to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific card. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) |
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63 Watts |
| Radeon HD 4830 512MB |
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95 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 6670 (OEM) should in theory be just a bit superior to the Radeon HD 4830 512MB overall. (explain)
| Radeon HD 6670 (OEM) |
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64000 MB/sec |
| Radeon HD 4830 512MB |
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57600 MB/sec |
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Texel Rate
The Radeon HD 6670 (OEM) is a bit (about 4%) better at AF than the Radeon HD 4830 512MB. (explain)| Radeon HD 6670 (OEM) |
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19200 Mtexels/sec |
| Radeon HD 4830 512MB |
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18400 Mtexels/sec |
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Pixel Rate
If running with lots of anti-aliasing is important to you, then the Radeon HD 4830 512MB is superior to the Radeon HD 6670 (OEM), and very much so. (explain)| Radeon HD 4830 512MB |
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9200 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 4830 512MBAmazon.com
Check prices at:
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Radeon HD 6670 (OEM)Amazon.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 4830 512MB | Radeon HD 6670 (OEM) |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Oct 21, 2008 | February 2011 |
| Code Name | RV770 LE | Turks |
| Memory | 512 MB | 512 MB |
| Core Speed | 575 MHz | 800 MHz |
| Memory Speed | 1800 MHz | 4000 MHz |
| Power (Max TDP) | 95 watts | 63 watts |
| Bandwidth | 57600 MB/sec | 64000 MB/sec |
| Texel Rate | 18400 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 9200 Mpixels/sec | 6400 Mpixels/sec |
| Unified Shaders | 640(128x5) | 480 |
| Texture Mapping Units | 32 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 715 million |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core clock 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 processed in a second.
Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 4830 512MBAmazon.com
Check prices at:
|
Radeon HD 6670 (OEM)Amazon.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.
|
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