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Radeon HD 3650 512MB vs Radeon HD 4650 1GB
Intro
The Radeon HD 3650 512MB has a clock speed of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 128-bit bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.Compare those specs to the Radeon HD 4650 1GB, which features clock speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 32 TAUs 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 theoretically perform a small bit faster than 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 should be a lot (about 231%) better at anisotropic 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 will be much (about 66%) faster with regards to anti-aliasing than the Radeon HD 3650 512MB, and also able to handle 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 max amount of information (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential 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 … [...]