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Radeon HD 4850 512MB vs Radeon HD 6950
Intro
The Radeon HD 4850 512MB has core speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.Compare those specifications to the Radeon HD 6950, which has GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4850 512MB |
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110 Watts |
| Radeon HD 6950 |
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200 Watts |
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Memory Bandwidth
The Radeon HD 6950, in theory, should perform much faster than the Radeon HD 4850 512MB overall. (explain)
| Radeon HD 6950 |
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160000 MB/sec |
| Radeon HD 4850 512MB |
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63552 MB/sec |
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Texel Rate
The Radeon HD 6950 should be quite a bit (about 182%) faster with regards to anisotropic filtering than the Radeon HD 4850 512MB. (explain)| Radeon HD 6950 |
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70400 Mtexels/sec |
| Radeon HD 4850 512MB |
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25000 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 6950 is superior to the Radeon HD 4850 512MB, by a large margin. (explain)| Radeon HD 6950 |
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25600 Mpixels/sec |
| Radeon HD 4850 512MB |
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10000 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 512MBAmazon.com
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Radeon HD 6950Amazon.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 512MB | Radeon HD 6950 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | December 2010 |
| Code Name | RV770 PRO | Cayman Pro |
| Memory | 512 MB | 1024 MB |
| Core Speed | 625 MHz | 800 MHz |
| Memory Speed | 1986 MHz | 5000 MHz |
| Power (Max TDP) | 110 watts | 200 watts |
| Bandwidth | 63552 MB/sec | 160000 MB/sec |
| Texel Rate | 25000 Mtexels/sec | 70400 Mtexels/sec |
| Pixel Rate | 10000 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1408 |
| Texture Mapping Units | 40 | 88 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 2640 million |
| Bus | PCIe 2.0 x16 | PCIe x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses 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 per second. This figure is worked out by multiplying the total amount 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 in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4850 512MBAmazon.com
Check prices at:
|
Radeon HD 6950Amazon.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 4850 512MB vs Radeon HD 6950”[...] Details kommt meine HD4850 leider doch an ihre Grenzen Tante Edith: Laut diesen Leuten... Radeon HD 4850 512MB vs Radeon HD 6950 – Performance Comparison Benchmarks @ Hardware Compare ... ist die HD6950 im Schnitt (nur verglichen anhand der technischen Daten) lediglich 60 % [...]