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Radeon HD 3650 512MB vs Radeon HD 4650 1GB
Intro
The Radeon HD 3650 512MB features a clock speed of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 128-bit bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.Compare those specifications to the Radeon HD 4650 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 600 MHz. The GDDR3 RAM is set to run at a frequency of 700 MHz on this specific card. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 ROPs.
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
As far as performance goes, the Radeon HD 3650 512MB should theoretically be a bit superior to the Radeon HD 4650 1GB overall. (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 is a lot (more or less 231%) better at AF 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 will be quite a bit (about 66%) more effective at anti-aliasing than the Radeon HD 3650 512MB, and also should be capable of handling higher screen resolutions while still performing well. (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 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. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach 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 … [...]