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Radeon HD 3470 256MB vs Radeon HD 3470 512MB
Intro
The Radeon HD 3470 256MB comes with a GPU clock speed of 800 MHz, and the 256 MB of DDR2 RAM runs at 950 MHz through a 128-bit bus. It also features 40(8x5) Stream Processors, 4 Texture Address Units, and 4 Raster Operation Units.Compare those specs to the Radeon HD 3470 512MB, which makes use of a 55 nm design. AMD has set the core speed at 800 MHz. The GDDR3 memory is set to run at a frequency of 950 MHz on this particular card. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Both cards have exactly the same memory bandwidth, so in theory they should have the same performance. (explain)
Texel Rate
Both cards have exactly the same texel rate, so theoretically they should be equally good at at AF. (explain)Pixel Rate
Both cards have the exact same pixel fill rate, so in theory they should be equally good at at full screen anti-aliasing, and be able to handle the same resolutions. (explain)
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 3470 256MBAmazon.com
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Radeon HD 3470 512MBAmazon.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 3470 256MB | Radeon HD 3470 512MB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | 2008 | 2008 |
| Code Name | RV620 PRO | RV620 PRO |
| Memory | 256 MB | 512 MB |
| Core Speed | 800 MHz | 800 MHz |
| Memory Speed | 1900 MHz | 1900 MHz |
| Power (Max TDP) | (Unknown) watts | (Unknown) watts |
| Bandwidth | 30400 MB/sec | 30400 MB/sec |
| Texel Rate | 3200 Mtexels/sec | 3200 Mtexels/sec |
| Pixel Rate | 3200 Mpixels/sec | 3200 Mpixels/sec |
| Unified Shaders | 40(8x5) | 40(8x5) |
| Texture Mapping Units | 4 | 4 |
| Render Output Units | 4 | 4 |
| Bus Type | DDR2 | GDDR3 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 55 nm | 55 nm |
| Transistors | (Unknown) million | (Unknown) million |
| Bus | PCIe 2.0 x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10.1 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 processed in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 3470 256MBAmazon.com
Check prices at:
|
Radeon HD 3470 512MBAmazon.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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