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Radeon HD 4870 512MB vs Radeon HD 5830
Intro
The Radeon HD 4870 512MB makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.Compare those specs to the Radeon HD 5830, which comes with a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is made up of 1120(224x5) SPUs, 56 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 512MB |
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150 Watts |
| Radeon HD 5830 |
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175 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 5830 should perform just a bit faster than the Radeon HD 4870 512MB in general. (explain)
| Radeon HD 5830 |
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128000 MB/sec |
| Radeon HD 4870 512MB |
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115200 MB/sec |
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Texel Rate
The Radeon HD 5830 should be much (about 49%) more effective at AF than the Radeon HD 4870 512MB. (explain)| Radeon HD 5830 |
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44800 Mtexels/sec |
| Radeon HD 4870 512MB |
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30000 Mtexels/sec |
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Pixel Rate
The Radeon HD 5830 will be a small bit (more or less 7%) better at FSAA than the Radeon HD 4870 512MB, and able to handle higher screen resolutions without losing too much performance. (explain)| Radeon HD 5830 |
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12800 Mpixels/sec |
| Radeon HD 4870 512MB |
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12000 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 4870 512MBAmazon.com
Check prices at:
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Radeon HD 5830Amazon.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 4870 512MB | Radeon HD 5830 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | February 25, 2010 |
| Code Name | RV770 XT | Cypress LE |
| Memory | 512 MB | 1024 MB |
| Core Speed | 750 MHz | 800 MHz |
| Memory Speed | 3600 MHz | 4000 MHz |
| Power (Max TDP) | 150 watts | 175 watts |
| Bandwidth | 115200 MB/sec | 128000 MB/sec |
| Texel Rate | 30000 Mtexels/sec | 44800 Mtexels/sec |
| Pixel Rate | 12000 Mpixels/sec | 12800 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1120(224x5) |
| Texture Mapping Units | 40 | 56 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | 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 (measured in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 4870 512MBAmazon.com
Check prices at:
|
Radeon HD 5830Amazon.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
2 Responses to “Radeon HD 4870 512MB vs Radeon HD 5830”geforce 315
[...] Radeon HD 4870 512MB vs Radeon HD 5830 – Performance …Jun 8, 2011 … Compare all that to the Radeon HD 5830, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz … [...]