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Radeon HD 3650 256MB vs Radeon HD 3650 512MB
Intro
The Radeon HD 3650 256MB features a GPU clock speed of 725 MHz, and the 256 MB of DDR2 memory is set to run at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.Compare all of that to the Radeon HD 3650 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR3 RAM is set to run at a frequency of 800 MHz on this specific model. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Both cards have exactly the same bandwidth, so in theory they should have identical performance. (explain)
Texel Rate
Both cards have exactly the same texel rate, so theoretically they should perform equally good at at AF. (explain)Pixel Rate
Both cards have exactly the same pixel fill rate, so in theory they should be equally good at at FSAA, and be able to handle the same screen 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 3650 256MBAmazon.com
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Radeon HD 3650 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 3650 256MB | Radeon HD 3650 512MB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | 2008 | 2008 |
| Code Name | RV635 PRO | RV635 PRO |
| Memory | 256 MB | 512 MB |
| Core Speed | 725 MHz | 725 MHz |
| Memory Speed | 1600 MHz | 1600 MHz |
| Power (Max TDP) | 78 watts | 78 watts |
| Bandwidth | 25600 MB/sec | 25600 MB/sec |
| Texel Rate | 5800 Mtexels/sec | 5800 Mtexels/sec |
| Pixel Rate | 2900 Mpixels/sec | 2900 Mpixels/sec |
| Unified Shaders | 120(24x5) | 120(24x5) |
| Texture Mapping Units | 8 | 8 |
| 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/AGP 8x | PCIe 2.0 x16/AGP 8x |
| DirectX Version | DirectX 10.1 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 3650 256MBAmazon.com
Check prices at:
|
Radeon HD 3650 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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