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Radeon HD 3470 256MB vs Radeon HD 3690/3830
Intro
The Radeon HD 3470 256MB features a core clock speed of 800 MHz and a DDR2 memory frequency of 950 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It is made up of 40(8x5) SPUs, 4 Texture Address Units, and 4 Raster Operation Units.Compare those specs to the Radeon HD 3690/3830, which comes with a GPU core clock speed of 668 MHz, and 256 MB of GDDR3 RAM running at 828 MHz through a 128-bit bus. It also is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
The Radeon HD 3470 256MB should theoretically be a small bit faster than the Radeon HD 3690/3830 overall. (explain)
| Radeon HD 3470 256MB |
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30400 MB/sec |
| Radeon HD 3690/3830 |
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26496 MB/sec |
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Texel Rate
The Radeon HD 3690/3830 is quite a bit (about 234%) better at AF than the Radeon HD 3470 256MB. (explain)| Radeon HD 3690/3830 |
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10688 Mtexels/sec |
| Radeon HD 3470 256MB |
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3200 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 3690/3830 is the winner, and very much so. (explain)| Radeon HD 3690/3830 |
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10688 Mpixels/sec |
| Radeon HD 3470 256MB |
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3200 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 3470 256MBAmazon.com
Check prices at:
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Radeon HD 3690/3830Amazon.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 3470 256MB | Radeon HD 3690/3830 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | 2008 | 2008 |
| Code Name | RV620 PRO | RV670 PRO |
| Memory | 256 MB | 256 MB |
| Core Speed | 800 MHz | 668 MHz |
| Memory Speed | 1900 MHz | 1656 MHz |
| Power (Max TDP) | (Unknown) watts | 75 watts |
| Bandwidth | 30400 MB/sec | 26496 MB/sec |
| Texel Rate | 3200 Mtexels/sec | 10688 Mtexels/sec |
| Pixel Rate | 3200 Mpixels/sec | 10688 Mpixels/sec |
| Unified Shaders | 40(8x5) | 320(64x5) |
| Texture Mapping Units | 4 | 16 |
| Render Output Units | 4 | 16 |
| 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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 3470 256MBAmazon.com
Check prices at:
|
Radeon HD 3690/3830Amazon.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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