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Radeon HD 3650 512MB vs Radeon HD 4650 1GB
Intro
The Radeon HD 3650 512MB has a GPU core clock speed of 725 MHz, and the 512 MB of GDDR3 memory runs at 800 MHz through a 128-bit bus. It also features 120(24x5) SPUs, 8 TAUs, and 4 ROPs.Compare those specifications to the Radeon HD 4650 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR3 memory works at a speed of 700 MHz on this particular card. It features 320(64x5) SPUs as well as 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
The Radeon HD 3650 512MB should in theory be a bit faster than the Radeon HD 4650 1GB overall. (explain)
| Radeon HD 3650 512MB |
|
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 much (more or less 231%) more effective 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
If running with high levels of AA is important to you, then the Radeon HD 4650 1GB is the winner, and very much so. (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: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max 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 … [...]