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Radeon HD 4850 2GB vs Radeon HD 6670 (OEM)
Intro
The Radeon HD 4850 2GB comes with a GPU core clock speed of 625 MHz, and the 2048 MB of GDDR4 RAM is set to run at 993 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.Compare all that to the Radeon HD 6670 (OEM), which comes with GPU core speed of 800 MHz, and 512 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also features 480 SPUs, 24 Texture Address Units, and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) |
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63 Watts |
| Radeon HD 4850 2GB |
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110 Watts |
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Memory Bandwidth
The Radeon HD 6670 (OEM), in theory, should perform a small bit faster than the Radeon HD 4850 2GB overall. (explain)
| Radeon HD 6670 (OEM) |
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64000 MB/sec |
| Radeon HD 4850 2GB |
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63552 MB/sec |
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Texel Rate
The Radeon HD 4850 2GB will be much (approximately 30%) better at AF than the Radeon HD 6670 (OEM). (explain)| Radeon HD 4850 2GB |
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25000 Mtexels/sec |
| Radeon HD 6670 (OEM) |
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19200 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 4850 2GB is the winner, by a large margin. (explain)| Radeon HD 4850 2GB |
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10000 Mpixels/sec |
| Radeon HD 6670 (OEM) |
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6400 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 4850 2GBAmazon.com
Check prices at:
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Radeon HD 6670 (OEM)Amazon.com
Check prices at:
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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 4850 2GB | Radeon HD 6670 (OEM) |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | February 2011 |
| Code Name | RV770 PRO | Turks |
| Memory | 2048 MB | 512 MB |
| Core Speed | 625 MHz | 800 MHz |
| Memory Speed | 1986 MHz | 4000 MHz |
| Power (Max TDP) | 110 watts | 63 watts |
| Bandwidth | 63552 MB/sec | 64000 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 6400 Mpixels/sec |
| Unified Shaders | 800(160x5) | 480 |
| Texture Mapping Units | 40 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR4 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 715 million |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of 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 4850 2GBAmazon.com
Check prices at:
|
Radeon HD 6670 (OEM)Amazon.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.
|
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