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Radeon HD 4830 512MB vs Radeon HD 6450 (OEM)
Intro
The Radeon HD 4830 512MB comes with core clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 ROPs.Compare those specs to the Radeon HD 6450 (OEM), which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM running at 800 MHz through a 64-bit bus. It also is made up of 160 Stream Processors, 8 TAUs, and 4 ROPs.
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
Theoretically speaking, the Radeon HD 4830 512MB should be a lot 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 will be a lot (about 268%) better at anisotropic filtering 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
If running with high levels of AA is important to you, then the Radeon HD 4830 512MB is superior to the Radeon HD 6450 (OEM), and very much so. (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 largest amount of data (measured in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 can be applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability 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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