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Radeon HD 4830 1GB vs Radeon HD 4830 512MB
Intro
The Radeon HD 4830 1GB makes use of a 55 nm design. AMD has clocked the core speed at 575 MHz. The GDDR4 memory is set to run at a speed of 900 MHz on this model. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.Compare those specs to the Radeon HD 4830 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 575 MHz. The GDDR3 memory works at a frequency of 900 MHz on this model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Both cards have exactly the same bandwidth, so theoretically they should perform exactly the same. (explain)
Texel Rate
Both cards have the exact same texel rate, so theoretically they should be equally good at at AF. (explain)Pixel Rate
Both cards have the exact same pixel fill rate, so in theory they should perform equally good at at anti-aliasing, and be able to handle the same resolutions. (explain)
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 1GBAmazon.com
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Radeon HD 4830 512MBAmazon.com
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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 1GB | Radeon HD 4830 512MB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Oct 21, 2008 | Oct 21, 2008 |
| Code Name | RV770 LE | RV770 LE |
| Memory | 1024 MB | 512 MB |
| Core Speed | 575 MHz | 575 MHz |
| Memory Speed | 1800 MHz | 1800 MHz |
| Power (Max TDP) | 95 watts | 95 watts |
| Bandwidth | 57600 MB/sec | 57600 MB/sec |
| Texel Rate | 18400 Mtexels/sec | 18400 Mtexels/sec |
| Pixel Rate | 9200 Mpixels/sec | 9200 Mpixels/sec |
| Unified Shaders | 640(128x5) | 640(128x5) |
| Texture Mapping Units | 32 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR4 | GDDR3 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 55 nm |
| Transistors | 956 million | 956 million |
| Bus | PCIe 2.0 x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10.1 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.
Radeon HD 4830 1GBAmazon.com
Check prices at:
|
Radeon HD 4830 512MBAmazon.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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