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Radeon HD 4830 512MB vs Radeon HD 6450 (OEM)
Intro
The Radeon HD 4830 512MB features core clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.Compare that to the Radeon HD 6450 (OEM), which uses a 40 nm design. AMD has clocked the core speed at 625 MHz. The GDDR3 memory works at a speed of 800 MHz on this particular model. It features 160 SPUs as well as 8 TAUs and 4 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) |
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31 Watts |
| Radeon HD 4830 512MB |
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95 Watts |
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Memory Bandwidth
The Radeon HD 4830 512MB should in theory perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)
| Radeon HD 4830 512MB |
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57600 MB/sec |
| Radeon HD 6450 (OEM) |
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12800 MB/sec |
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Texel Rate
The Radeon HD 4830 512MB is much (more or less 268%) more effective at AF than the Radeon HD 6450 (OEM). (explain)| Radeon HD 4830 512MB |
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18400 Mtexels/sec |
| Radeon HD 6450 (OEM) |
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5000 Mtexels/sec |
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Pixel Rate
The Radeon HD 4830 512MB will be quite a bit (more or less 268%) better at anti-aliasing than the Radeon HD 6450 (OEM), and also will be able to handle higher resolutions while still performing well. (explain)| Radeon HD 4830 512MB |
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9200 Mpixels/sec |
| Radeon HD 6450 (OEM) |
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2500 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 6450 (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 6450 (OEM) |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Oct 21, 2008 | February 2011 |
| Code Name | RV770 LE | Caicos |
| Memory | 512 MB | 512 MB |
| Core Speed | 575 MHz | 625 MHz |
| Memory Speed | 1800 MHz | 1600 MHz |
| Power (Max TDP) | 95 watts | 31 watts |
| Bandwidth | 57600 MB/sec | 12800 MB/sec |
| Texel Rate | 18400 Mtexels/sec | 5000 Mtexels/sec |
| Pixel Rate | 9200 Mpixels/sec | 2500 Mpixels/sec |
| Unified Shaders | 640(128x5) | 160 |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 16 | 4 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 256-bit | 64-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 370 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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one 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 number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 4830 512MBAmazon.com
Check prices at:
|
Radeon HD 6450 (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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