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Radeon HD 3650 512MB vs Radeon HD 4650 1GB
Intro
The Radeon HD 3650 512MB features core speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.Compare that to the Radeon HD 4650 1GB, which uses a 55 nm design. AMD has set the core frequency at 600 MHz. The GDDR3 memory runs at a speed of 700 MHz on this model. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4650 1GB |
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55 Watts |
| Radeon HD 3650 512MB |
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78 Watts |
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Memory Bandwidth
The Radeon HD 3650 512MB should in theory perform a small bit faster than the Radeon HD 4650 1GB in general. (explain)
| Radeon HD 3650 512MB |
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25600 MB/sec |
| Radeon HD 4650 1GB |
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22400 MB/sec |
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Texel Rate
The Radeon HD 4650 1GB will be a lot (about 231%) faster with regards to texture filtering than the Radeon HD 3650 512MB. (explain)| Radeon HD 4650 1GB |
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19200 Mtexels/sec |
| Radeon HD 3650 512MB |
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5800 Mtexels/sec |
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Pixel Rate
The Radeon HD 4650 1GB should be much (more or less 66%) better at AA than the Radeon HD 3650 512MB, and also capable of handling higher screen resolutions more effectively. (explain)| Radeon HD 4650 1GB |
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4800 Mpixels/sec |
| Radeon HD 3650 512MB |
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2900 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 3650 512MBAmazon.com
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Radeon HD 4650 1GBAmazon.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 512MB | Radeon HD 4650 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | 2008 | Sep 10, 2008 |
| Code Name | RV635 PRO | RV730 PRO |
| Memory | 512 MB | 1024 MB |
| Core Speed | 725 MHz | 600 MHz |
| Memory Speed | 1600 MHz | 1400 MHz |
| Power (Max TDP) | 78 watts | 55 watts |
| Bandwidth | 25600 MB/sec | 22400 MB/sec |
| Texel Rate | 5800 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 2900 Mpixels/sec | 4800 Mpixels/sec |
| Unified Shaders | 120(24x5) | 320(64x5) |
| Texture Mapping Units | 8 | 32 |
| Render Output Units | 4 | 8 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 55 nm | 55 nm |
| Transistors | (Unknown) million | 514 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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 3650 512MBAmazon.com
Check prices at:
|
Radeon HD 4650 1GBAmazon.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
One Response to “Radeon HD 3650 512MB vs Radeon HD 4650 1GB”[...] Radeon HD 3650 512MB vs Radeon HD 4650 1GB – Hwcompare.comCompare that to the Radeon HD 4650 1GB, which comes with a core clock … the results were calculated based on the card’s specifications, and real-world … [...]