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Radeon HD 3470 256MB vs Radeon HD 3470 512MB
Intro
The Radeon HD 3470 256MB uses a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 RAM works at a speed of 950 MHz on this specific model. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 Rasterization Operator Units.Compare those specs to the Radeon HD 3470 512MB, which features GPU core speed of 800 MHz, and 512 MB of GDDR3 memory set to run at 950 MHz through a 128-bit bus. It also is made up of 40(8x5) Stream Processors, 4 TAUs, and 4 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Both cards have the exact same memory bandwidth, so in theory they should have the same performance. (explain)
Texel Rate
Both cards have exactly the same texel rate, so in theory they should be equally good at at anisotropic filtering. (explain)Pixel Rate
Both cards have exactly the same pixel fill rate, so in theory they should be equally good at at AA, and be capable of handling 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: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR 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 better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach 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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