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Radeon HD 4830 1GB vs Radeon HD 6450 (OEM)
Intro
The Radeon HD 4830 1GB uses a 55 nm design. AMD has set the core speed at 575 MHz. The GDDR4 memory is set to run at a frequency of 900 MHz on this particular model. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.Compare those specs to the Radeon HD 6450 (OEM), which has GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 64-bit bus. It also is comprised of 160 SPUs, 8 Texture Address Units, 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 1GB |
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95 Watts |
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Memory Bandwidth
In theory, the Radeon HD 4830 1GB is 350% quicker than the Radeon HD 6450 (OEM) overall, due to its greater bandwidth. (explain)
| Radeon HD 4830 1GB |
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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 1GB will be much (approximately 268%) faster with regards to texture filtering than the Radeon HD 6450 (OEM). (explain)| Radeon HD 4830 1GB |
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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 1GB should be much (about 268%) more effective at anti-aliasing than the Radeon HD 6450 (OEM), and will be able to handle higher screen resolutions better. (explain)| Radeon HD 4830 1GB |
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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 1GBAmazon.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 1GB | Radeon HD 6450 (OEM) |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Oct 21, 2008 | February 2011 |
| Code Name | RV770 LE | Caicos |
| Memory | 1024 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 | GDDR4 | 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 information (counted in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 4830 1GBAmazon.com
Check prices at:
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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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