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GeForce 9800 GT 512MB vs Radeon HD 6850
Intro
The GeForce 9800 GT 512MB comes with a core clock frequency of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 256-bit bus, and uses a 65/55 nm design. It is comprised of 112 SPUs, 56 TAUs, and 16 ROPs.Compare those specifications to the Radeon HD 6850, which comes with clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs along with 48 Texture Address Units and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce 9800 GT 512MB |
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105 Watts |
| Radeon HD 6850 |
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127 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 6850 should theoretically be a lot better than the GeForce 9800 GT 512MB in general. (explain)
| Radeon HD 6850 |
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128000 MB/sec |
| GeForce 9800 GT 512MB |
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57600 MB/sec |
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Texel Rate
The Radeon HD 6850 should be a bit (more or less 11%) more effective at texture filtering than the GeForce 9800 GT 512MB. (explain)| Radeon HD 6850 |
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37200 Mtexels/sec |
| GeForce 9800 GT 512MB |
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33600 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 6850 is superior to the GeForce 9800 GT 512MB, and very much so. (explain)| Radeon HD 6850 |
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24800 Mpixels/sec |
| GeForce 9800 GT 512MB |
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9600 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
GeForce 9800 GT 512MBAmazon.com
Check prices at:
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Radeon HD 6850Amazon.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 | GeForce 9800 GT 512MB | Radeon HD 6850 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | July 2008 | October 2010 |
| Code Name | G92a/b | Barts Pro |
| Memory | 512 MB | 1024 MB |
| Core Speed | 600 MHz | 775 MHz |
| Memory Speed | 1800 MHz | 4000 MHz |
| Power (Max TDP) | 105 watts | 127 watts |
| Bandwidth | 57600 MB/sec | 128000 MB/sec |
| Texel Rate | 33600 Mtexels/sec | 37200 Mtexels/sec |
| Pixel Rate | 9600 Mpixels/sec | 24800 Mpixels/sec |
| Unified Shaders | 112 | 960 |
| Texture Mapping Units | 56 | 48 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 65/55 nm | 40 nm |
| Transistors | 754 million | 1700 million |
| Bus | PCIe x16 2.0 | PCIe x16 |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.
GeForce 9800 GT 512MBAmazon.com
Check prices at:
|
Radeon HD 6850Amazon.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
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