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Radeon HD 4730 vs Radeon HD 4850 1GB
Intro
The Radeon HD 4730 comes with a GPU clock speed of 700 MHz, and the 512 MB of GDDR5 RAM is set to run at 900 MHz through a 128-bit bus. It also is made up of 640(128x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.Compare that to the Radeon HD 4850 1GB, which makes use of a 55 nm design. ATi has clocked the core frequency at 625 MHz. The GDDR4 memory works at a speed of 993 MHz on this card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4850 1GB |
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110 Watts |
| Radeon HD 4730 |
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140 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 4850 1GB should perform just a bit faster than the Radeon HD 4730 overall. (explain)
| Radeon HD 4850 1GB |
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63552 MB/sec |
| Radeon HD 4730 |
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57600 MB/sec |
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Texel Rate
The Radeon HD 4850 1GB should be a bit (about 12%) faster with regards to AF than the Radeon HD 4730. (explain)| Radeon HD 4850 1GB |
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25000 Mtexels/sec |
| Radeon HD 4730 |
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22400 Mtexels/sec |
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Pixel Rate
The Radeon HD 4850 1GB will be a lot (about 79%) faster with regards to anti-aliasing than the Radeon HD 4730, and will be capable of handling higher resolutions more effectively. (explain)| Radeon HD 4850 1GB |
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10000 Mpixels/sec |
| Radeon HD 4730 |
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5600 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Radeon HD 4730Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 4850 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Radeon HD 4730 | Radeon HD 4850 1GB |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | Jun 8, 2009 | Jun 25, 2008 |
| Code Name | RV770/CE | RV770 PRO |
| Fab Process | 55 nm | 55 nm |
| Bus | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 700 MHz | 625 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 900 MHz | 993 MHz |
| Unified Shaders | 640(128x5) | 800(160x5) |
| Texture Mapping Units | 32 | 40 |
| Render Output Units | 8 | 16 |
| Bus Type | GDDR5 | GDDR4 |
| Bus Width | 128-bit | 256-bit |
| DirectX Version | DirectX 10.1 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
| Power (Max TDP) | 140 watts | 110 watts |
| Shader Model | 4.1 | 4.1 |
| Bandwidth | 57600 MB/sec | 63552 MB/sec |
| Texel Rate | 22400 Mtexels/sec | 25000 Mtexels/sec |
| Pixel Rate | 5600 Mpixels/sec | 10000 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core 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 applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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