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Radeon HD 4830 512MB vs Radeon HD 6670 (OEM)
Intro
The Radeon HD 4830 512MB comes with core speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.Compare all of that to the Radeon HD 6670 (OEM), which comes with clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 480 SPUs along with 24 TAUs and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) |
|
63 Watts |
| Radeon HD 4830 512MB |
|
95 Watts |
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Memory Bandwidth
In theory, the Radeon HD 6670 (OEM) should be a small bit faster than the Radeon HD 4830 512MB in general. (explain)
| Radeon HD 6670 (OEM) |
|
64000 MB/sec |
| Radeon HD 4830 512MB |
|
57600 MB/sec |
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Texel Rate
The Radeon HD 6670 (OEM) is a bit (approximately 4%) faster with regards to texture filtering than the Radeon HD 4830 512MB. (explain)| Radeon HD 6670 (OEM) |
|
19200 Mtexels/sec |
| Radeon HD 4830 512MB |
|
18400 Mtexels/sec |
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Pixel Rate
If using a high screen resolution 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 |
|
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
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 4830 512MBAmazon.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
|
Specifications
| Model | Radeon HD 4830 512MB | Radeon HD 6670 (OEM) |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | Oct 21, 2008 | February 2011 |
| Code Name | RV770 LE | Turks |
| Fab Process | 55 nm | 40 nm |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| Memory | 512 MB | 512 MB |
| Core Speed | 575 MHz | 800 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 900 MHz | 1000 MHz |
| 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 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
| Power (Max TDP) | 95 watts | 63 watts |
| Shader Model | 4.1 | 5.0 |
| Bandwidth | 57600 MB/sec | 64000 MB/sec |
| Texel Rate | 18400 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 9200 Mpixels/sec | 6400 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
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