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Radeon HD 4850 2GB vs Radeon HD 5670
Intro
The Radeon HD 4850 2GB features a GPU clock speed of 625 MHz, and the 2048 MB of GDDR4 memory runs at 993 MHz through a 256-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.Compare that to the Radeon HD 5670, which has GPU core speed of 775 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5670 |
|
61 Watts |
| Radeon HD 4850 2GB |
|
110 Watts |
|
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Memory Bandwidth
The Radeon HD 5670 should theoretically perform a bit faster than the Radeon HD 4850 2GB in general. (explain)
| Radeon HD 5670 |
|
64000 MB/sec |
| Radeon HD 4850 2GB |
|
63552 MB/sec |
|
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Texel Rate
The Radeon HD 4850 2GB should be quite a bit (more or less 61%) better at AF than the Radeon HD 5670. (explain)| Radeon HD 4850 2GB |
|
25000 Mtexels/sec |
| Radeon HD 5670 |
|
15500 Mtexels/sec |
|
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 4850 2GB is superior to the Radeon HD 5670, by far. (explain)| Radeon HD 4850 2GB |
|
10000 Mpixels/sec |
| Radeon HD 5670 |
|
6200 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 5670Amazon.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 5670 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | January 14, 2010 |
| Code Name | RV770 PRO | Redwood XT |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 625 MHz | 775 MHz |
| Memory Speed | 1986 MHz | 4000 MHz |
| Power (Max TDP) | 110 watts | 61 watts |
| Bandwidth | 63552 MB/sec | 64000 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 15500 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 6200 Mpixels/sec |
| Unified Shaders | 800(160x5) | 400(80x5) |
| Texture Mapping Units | 40 | 20 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR4 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 627 million |
| Bus | PCIe 2.0 x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Radeon HD 4850 2GBAmazon.com
Check prices at:
|
Radeon HD 5670Amazon.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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