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Radeon HD 4830 1GB vs Radeon HD 6450 (OEM) 1GB
Intro
The Radeon HD 4830 1GB has a clock frequency of 575 MHz and a GDDR4 memory frequency of 900 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.Compare all of that to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this particular card. It features 160 SPUs along with 8 Texture Address Units and 4 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) 1GB |
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31 Watts |
| Radeon HD 4830 1GB |
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95 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 4830 1GB should in theory be quite a bit better than the Radeon HD 6450 (OEM) 1GB in general. (explain)
| Radeon HD 4830 1GB |
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57600 MB/sec |
| Radeon HD 6450 (OEM) 1GB |
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28800 MB/sec |
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Texel Rate
The Radeon HD 4830 1GB is much (about 207%) better at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)| Radeon HD 4830 1GB |
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18400 Mtexels/sec |
| Radeon HD 6450 (OEM) 1GB |
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6000 Mtexels/sec |
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Pixel Rate
The Radeon HD 4830 1GB should be much (approximately 207%) more effective at FSAA than the Radeon HD 6450 (OEM) 1GB, and able to handle higher screen resolutions better. (explain)| Radeon HD 4830 1GB |
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9200 Mpixels/sec |
| Radeon HD 6450 (OEM) 1GB |
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3000 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) 1GBAmazon.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) 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Oct 21, 2008 | February 2011 |
| Code Name | RV770 LE | Caicos |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 575 MHz | 750 MHz |
| Memory Speed | 1800 MHz | 3600 MHz |
| Power (Max TDP) | 95 watts | 31 watts |
| Bandwidth | 57600 MB/sec | 28800 MB/sec |
| Texel Rate | 18400 Mtexels/sec | 6000 Mtexels/sec |
| Pixel Rate | 9200 Mpixels/sec | 3000 Mpixels/sec |
| Unified Shaders | 640(128x5) | 160 |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 16 | 4 |
| Bus Type | GDDR4 | GDDR5 |
| 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 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 interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4830 1GBAmazon.com
Check prices at:
|
Radeon HD 6450 (OEM) 1GBAmazon.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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