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Radeon HD 4850 512MB vs Radeon HD 5850
Intro
The Radeon HD 4850 512MB has clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.Compare all of that to the Radeon HD 5850, which features core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1440(288x5) SPUs along with 72 TAUs and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4850 512MB |
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110 Watts |
| Radeon HD 5850 |
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151 Watts |
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Memory Bandwidth
The Radeon HD 5850, in theory, should be quite a bit faster than the Radeon HD 4850 512MB overall. (explain)
| Radeon HD 5850 |
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128000 MB/sec |
| Radeon HD 4850 512MB |
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63552 MB/sec |
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Texel Rate
The Radeon HD 5850 will be a lot (about 109%) faster with regards to AF than the Radeon HD 4850 512MB. (explain)| Radeon HD 5850 |
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52200 Mtexels/sec |
| Radeon HD 4850 512MB |
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25000 Mtexels/sec |
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Pixel Rate
The Radeon HD 5850 is quite a bit (approximately 132%) better at full screen anti-aliasing than the Radeon HD 4850 512MB, and also should be able to handle higher screen resolutions more effectively. (explain)| Radeon HD 5850 |
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23200 Mpixels/sec |
| Radeon HD 4850 512MB |
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10000 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 4850 512MBAmazon.com
Check prices at:
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Radeon HD 5850Amazon.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 4850 512MB | Radeon HD 5850 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | September 30, 2009 |
| Code Name | RV770 PRO | Cypress PRO |
| Memory | 512 MB | 1024 MB |
| Core Speed | 625 MHz | 725 MHz |
| Memory Speed | 1986 MHz | 4000 MHz |
| Power (Max TDP) | 110 watts | 151 watts |
| Bandwidth | 63552 MB/sec | 128000 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 52200 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 23200 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1440(288x5) |
| Texture Mapping Units | 40 | 72 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 2154 million |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units of the card by the core clock 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 in one second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 4850 512MBAmazon.com
Check prices at:
|
Radeon HD 5850Amazon.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.
|
Comments
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